SELECT COUNT("Capital") FROM table_23090 WHERE "Area km\u00b2" = '1104'
What is the total number of capitals that have an area of exactly 1104 square km?
CREATE TABLE table_23090 (
    "Country" text,
    "Area km\u00b2" real,
    "Population" real,
    "Population density per km\u00b2" real,
    "HDI (2011)" text,
    "Capital" text
)