Hecho general: 48637 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 48637 is an uninteresting number.
Trivia: 48637 is a boring number.
Fecha histórica: February 28th is the day in 1940 that Basketball is televised for the first time (Fordham University vs. the University of Pittsburgh in Madison Square Garden).