What capital has a population of 596268?
CREATE TABLE "table1_1404414_2" (
  "code" real,
  "county" text,
  "former_province" text,
  "area_km_2" text,
  "population_census_2009" real,
  "capital" text
);
SELECT "capital" FROM "table1_1404414_2" WHERE "population_census_2009"=596268;