Hecho general: 74473 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 74473 is an unremarkable number.
Trivia: 74473 is a boring number.
Fecha histórica: November 25th is the day in 1833 that a massive undersea earthquake, estimated magnitude between 8.7-9.2 rocks Sumatra, producing a massive tsunami all along the Indonesian coast.