general_fact: 40028 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 40028 is an unremarkable number.
trivia: 40028 is an uninteresting number.
historical_date: August 4th is the day in 1892 that the father and stepmother of Lizzie Borden are found murdered in their Fall River, Massachusetts home.