Hecho general: 24247 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 24247 is an unremarkable number.
Trivia: 24247 is an uninteresting number.
Fecha histórica: May 20th is the day in 1989 that the Chinese authorities declare martial law in the face of pro-democracy demonstrations, setting the scene for the Tiananmen Square massacre.