Hecho matemático: 7828 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 7828 is an uninteresting number.
Fecha histórica: June 6th is the day in 1981 that Bihar train disaster A passenger train travelling between Mansi and Saharsa, India, jumps the tracks at a bridge crossing the Bagmati river.