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_16489766_2 (urban_population__2010_ VARCHAR, pinyin VARCHAR)

### Question ###
What is the total urban population of the city with the pinyin translation chángchūn?

### Accurate SQL ###

SELECT COUNT(urban_population__2010_) FROM table_16489766_2 WHERE pinyin = "Chángchūn"