Fatto generale: 15286 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 15286 is a boring number.
Trivia: 15286 is an uninteresting number.
Data storica: November 6th is the day in 1528 that Shipwrecked Spanish conquistador Álvar Núñez Cabeza de Vaca becomes the first known European to set foot in Texas.