Fait général: 17972 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 17972 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 17972 is an unremarkable number.
Date historique: March 15th is the day in 351 that Constantius II elevates his cousin Gallus to Caesar, and puts him in charge of the Eastern part of the Roman Empire.