Fait mathématique: 2430 is the number of unordered ways to write 1 as a sum of reciprocals of integers no larger than 18.
Culture générale: 2430 is an unremarkable number.
Date historique: August 26th is the day in 1999 that Russia begins the Second Chechen War in response to the Invasion of Dagestan by the Islamic International Peacekeeping Brigade.