Hecho matemático: 22938 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 22938 is an unremarkable number.
Fecha histórica: October 19th is the day in 1900 that Max Planck, in his house at Grunewald, on the outskirts of Berlin, discovers the law of black body emission (Planck's law).