Fait général: 16820 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 16820 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 16820 is an unremarkable number.
Date historique: January 18th is the day in 2007 that the strongest storm in the United Kingdom in 17 years kills 14 people, Germany sees the worst storm since 1999 with 13 deaths.