Fait général: 2830 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 2830 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 2830 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: September 30th is the day in 1966 that the British protectorate of Bechuanaland declares its independence, and becomes the Republic of Botswana.