General fact: 4808 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 4808 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 4808 is an uninteresting number.
Historical date: February 28th is the day in 1827 that the Baltimore & Ohio Railroad is incorporated, becoming the first railroad in America offering commercial transportation of both people and freight.