Fatto generale: 28215 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 28215 is an uninteresting number.
Trivia: 28215 is an uninteresting number.
Data storica: March 31st is the day in 1995 that Selena, an American singer, was murdered by her friend and employee of her boutiques Yolanda Saldívar who was embezzling money from the establishments.