Fait général: 7928 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 7928 is an uninteresting number.
Culture générale: 7928 is a boring number.
Date historique: September 14th is the day in 1979 that Afghan President Nur Muhammad Taraki is assassinated upon the order of Hafizullah Amin, who becomes the new president.