General fact: 28719 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 28719 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 28719 is an unremarkable number.
Historical date: August 17th is the day in 1980 that Azaria Chamberlain disappears, probably taken by a dingo, leading to what was then the most publicised trial in Australian history.