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Twenty-one thousand nine hundred and eighty

21980 in other numeral systems

Prime factorization of 21980

22 × 5 × 7 × 157

Divisors of 21980

1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1570, 2198, 3140, 4396, 5495, 10990 and 21980

Is 21980 in the Fibonacci number sequence?

No.

Its nearest Fibonacci number neighbors are 17711 and 28657.