general_fact: 90480 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 90480 is a boring number.
trivia: 90480 is an uninteresting number.
historical_date: September 22nd is the day in 1792 that Primidi Vendémiaire of year 1 of the French Republican Calendar as the French First Republic comes into being.