Fatto generale: 27381 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 27381 is a boring number.
Trivia: 27381 is an unremarkable number.
Data storica: December 18th is the day in 1271 that Kublai Khan renames his empire "Yuan" (元 yuán), officially marking the start of the Yuan Dynasty of Mongolia and China.