general_fact: 20297 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 20297 is an uninteresting number.
trivia: 20297 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: July 27th is the day in 1900 that Kaiser Wilhelm II makes a speech comparing Germans to Huns; for years afterwards, "Hun" would be a disparaging name for Germans.