Mathematical fact: 47870 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 47870 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: January 23rd is the day in 1973 that a volcanic eruption devastates Heimaey in the Vestmannaeyjar chain of islands off the south coast of Iceland.