general_fact: 6238 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 6238 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 6238 is an uninteresting number.
historical_date: January 28th is the day in 2002 that TAME Flight 120, a Boeing 727-100 crashes in the Andes mountains in southern Colombia killing 92.