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_24223834_3 (no_in_series VARCHAR, us_viewers__in_millions_ VARCHAR)

### Question ###
What episode number in the series had 2.528 million u.s. viewers?

### Accurate SQL ###

SELECT no_in_series FROM table_24223834_3 WHERE us_viewers__in_millions_ = "2.528"