General fact: 260 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 260 is the constant of an 8×8 magic square.
Trivia: 260 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: September 16th is the day in 1959 that the first successful photocopier, the Xerox 914, is introduced in a demonstration on live television from New York City.