Hecho matemático: 26347 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 26347 is an unremarkable number.
Fecha histórica: February 18th is the day in 1745 that the city of Surakarta, Central Java is founded on the banks of Bengawan Solo River, and becomes the capital of the Kingdom of Surakarta.