Fatto generale: 23938 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 23938 is a boring number.
Trivia: 23938 is an unremarkable number.
Data storica: July 15th is the day in 1381 that John Ball, a leader in the Peasants' Revolt, is hanged, drawn and quartered in the presence of King Richard II of England.