Fait général: 16908 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 16908 is a boring number.
Culture générale: 16908 is an unremarkable number.
Date historique: April 16th is the day in 1922 that the Treaty of Rapallo, pursuant to which Germany and the Soviet Union re-establish diplomatic relations, is signed.