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_17904 ( "Series number" text, "Episode number" real, "Date of first broadcast" text, "Total viewers" real, "Series average" real )

### Question ###
what is the total viewers where the date of first broadcast is 28 january 2010 and the episode number is 1?

### Accurate SQL ###

SELECT MIN("Total viewers") FROM table_17904 WHERE "Date of first broadcast" = '28 January 2010' AND "Episode number" = '1'