Fait mathématique: 2448 is the order of a non-cyclic simple group.
Culture générale: 2448 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: September 13th is the day in 533 that General Belisarius of the Byzantine Empire defeats Gelimer and the Vandals at the Battle of Ad Decimium, near Carthage, North Africa.