Fatto generale: 23617 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 23617 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 23617 is a boring number.
Data storica: August 28th is the day in 489 that Theodoric, king of the Ostrogoths defeats Odoacer at the Battle of Isonzo, forcing his way into Italy.