general_fact: 28805 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 28805 is an uninteresting number.
trivia: 28805 is a boring number.
historical_date: November 11th is the day in 1675 that Gottfried Leibniz demonstrates integral calculus for the first time to find the area under the graph of y = ƒ(x).