Fatto matematico: 4287 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 4287 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 26th is the day in 1687 that the city council of Amsterdam votes to support William of Orange's invasion of England, which became the Glorious Revolution.