Fatto generale: 13440 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 13440 is a boring number.
Trivia: 13440 is an uninteresting number.
Data storica: October 17th is the day in 1964 that Prime Minister of Australia Robert Menzies opens the artificial Lake Burley Griffin in the middle of the capital Canberra.