General fact: 47830 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 47830 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 47830 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: December 14th is the day in 1913 that Haruna, the fourth and last ship of the Kongō-class, launches, eventually becoming one of the Japanese workhorses during World War I and World War II.