Fait général: 15786 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 15786 is an unremarkable number.
Culture générale: 15786 is an unremarkable number.
Date historique: March 21st is the day in 1801 that the Battle of Alexandria is fought between British and French forces near the ruins of Nicopolis in Egypt.