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_49916 ( "Urban area (locality)" text, "Population" real, "Land area (hectares)" real, "Density (inh./km\u00b2)" real, "Code" real )

### Question ###
How many codes have a density of 621.68, and a Land area (hectares) larger than 75.28?

### Accurate SQL ###

SELECT SUM("Code") FROM table_49916 WHERE "Density (inh./km\u00b2)" = '621.68' AND "Land area (hectares)" > '75.28'