20983882 has 16 divisors (see below), whose sum is σ = 34142472. Its totient is φ = 9633280.

The previous prime is 20983799. The next prime is 20983891. The reversal of 20983882 is 28838902.

It can be written as a sum of positive squares in 4 ways, for example, as 19793601 + 1190281 = 4449^2 + 1091^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6133 + ... + 8920.

Almost surely, 2^20983882 is an apocalyptic number.

20983882 is a deficient number, since it is larger than the sum of its proper divisors (13158590).

20983882 is a wasteful number, since it uses less digits than its factorization.

20983882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15113.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 20983882 is about 4580.8167394036. The cubic root of 20983882 is about 275.8218149055.

The spelling of 20983882 in words is "twenty million, nine hundred eighty-three thousand, eight hundred eighty-two".