math_fact: 2734 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 2734 is an uninteresting number.
historical_date: June 26th is the day in 1718 that Tsarevich Alexei Petrovich of Russia, Peter the Great's son, mysteriously dies after being sentenced to death by his father for plotting against him.