General fact: 27648 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 27648 is an uninteresting number.
Trivia: 27648 is a boring number.
Historical date: September 11th is the day in 1982 that the international forces that were guaranteeing the safety of Palestinian refugees following Israel's 1982 Invasion of Lebanon leave Beirut.