Hecho general: 28135 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 28135 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 28135 is a boring number.
Fecha histórica: January 10th is the day in 1863 that the London Underground, the world's oldest underground railway, opens between London Paddington station and Farringdon station.