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_23887174_1 ( center VARCHAR, area__km²_ VARCHAR )

### Question ###
What's the center of the province that spreads out on 23860 km2?

### Accurate SQL ###

SELECT center FROM table_23887174_1 WHERE area__km²_ = 23860