Fait général: 8320 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 8320 is the number of subsets of {1, 1/2, 1/3, ... 1/42} that sum to an integer.
Culture générale: 8320 is an unremarkable number.
Date historique: October 11th is the day in 1984 that Aboard the Space Shuttle Challenger, astronaut Kathryn D. Sullivan becomes the first American woman to perform a space walk.