Hecho matemático: 224 is the sum of four consecutive primes (47 + 53 + 59 + 61).
Trivia: 224 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: August 11th is the day in 2003 that NATO takes over command of the peacekeeping force in Afghanistan, marking its first major operation outside Europe in its 54-year-history.