Fatto generale: 28519 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 28519 is an uninteresting number.
Trivia: 28519 is an unremarkable number.
Data storica: January 29th is the day in 1941 that Alexandros Koryzis becomes Prime Minister of Greece upon the sudden death of his predecessor, dictator Ioannis Metaxas.