General fact: 28529 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 28529 is an unremarkable number.
Trivia: 28529 is an uninteresting number.
Historical date: February 8th is the day in 1963 that the regime of Prime Minister of Iraq, Brigadier General Abdul-Karim Qassem is overthrown by the Ba'ath Party.