Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_24057191_2 ( series INTEGER, average_viewers__millions_ VARCHAR )

### Question ###
What series had an average of 3.72 million people watching it?

### Accurate SQL ###

SELECT MAX(series) FROM table_24057191_2 WHERE average_viewers__millions_ = "3.72"