General fact: 26767 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 26767 is an unremarkable number.
Trivia: 26767 is a boring number.
Historical date: April 13th is the day in 1256 that the Grand Union of the Augustinian order formed when Pope Alexander IV issues a papal bull Licet ecclesiae catholicae.