purchases of equity securities 2013 during 2018 , we repurchased 57669746 shares of our common stock at an average price of $ 143.70 .the following table presents common stock repurchases during each month for the fourth quarter of 2018 : period total number of shares purchased [a] average price paid per share total number of shares purchased as part of a publicly announced plan or program [b] maximum number of shares remaining under the plan or program [b] . period                   | total number of shares purchased [a] | average price paid per share | total number of shares purchased as part of a publicly announcedplan or program [b] | maximum number of shares remaining under the plan or program [b]
oct . 1 through oct . 31 | 6091605                              | $ 158.20                     | 6087727                                                                             | 32831024                                                        
nov . 1 through nov . 30 | 3408467                              | 147.91                       | 3402190                                                                             | 29428834                                                        
dec . 1 through dec . 31 | 3007951                              | 148.40                       | 3000715                                                                             | 26428119                                                        
total                    | 12508023                             | $ 153.04                     | 12490632                                                                            | n/a                                                              [a] total number of shares purchased during the quarter includes approximately 17391 shares delivered or attested to upc by employees to pay stock option exercise prices , satisfy excess tax withholding obligations for stock option exercises or vesting of retention units , and pay withholding obligations for vesting of retention shares .[b] effective january 1 , 2017 , our board of directors authorized the repurchase of up to 120 million shares of our common stock by december 31 , 2020 .these repurchases may be made on the open market or through other transactions .our management has sole discretion with respect to determining the timing and amount of these transactions. .
Question: what was the total number of shares repurchased in 2018, in millions?

Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.
purchases of equity securities 2013 during 2018 , we repurchased 57669746 shares of our common stock at an average price of $ 143.70 .the following table presents common stock repurchases during each month for the fourth quarter of 2018 : period total number of shares purchased [a] average price paid per share total number of shares purchased as part of a publicly announced plan or program [b] maximum number of shares remaining under the plan or program [b] . period                   | total number of shares purchased [a] | average price paid per share | total number of shares purchased as part of a publicly announcedplan or program [b] | maximum number of shares remaining under the plan or program [b]
oct . 1 through oct . 31 | 6091605                              | $ 158.20                     | 6087727                                                                             | 32831024                                                        
nov . 1 through nov . 30 | 3408467                              | 147.91                       | 3402190                                                                             | 29428834                                                        
dec . 1 through dec . 31 | 3007951                              | 148.40                       | 3000715                                                                             | 26428119                                                        
total                    | 12508023                             | $ 153.04                     | 12490632                                                                            | n/a                                                              [a] total number of shares purchased during the quarter includes approximately 17391 shares delivered or attested to upc by employees to pay stock option exercise prices , satisfy excess tax withholding obligations for stock option exercises or vesting of retention units , and pay withholding obligations for vesting of retention shares .[b] effective january 1 , 2017 , our board of directors authorized the repurchase of up to 120 million shares of our common stock by december 31 , 2020 .these repurchases may be made on the open market or through other transactions .our management has sole discretion with respect to determining the timing and amount of these transactions. .
Question: what was the total number of shares repurchased in 2018, in millions?
