general_fact: 48840 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 48840 is an uninteresting number.
trivia: 48840 is an unremarkable number.
historical_date: September 19th is the day in 1990 that Delhi University student Rajiv Goswami attempts Self Immolation during Anti-Reservation agitation in India.