20957192 has 16 divisors (see below), whose sum is σ = 41606460. Its totient is φ = 9862144.

The previous prime is 20957177. The next prime is 20957219. The reversal of 20957192 is 29175902.

It can be written as a sum of positive squares in 2 ways, for example, as 19945156 + 1012036 = 4466^2 + 1006^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76913 + ... + 77184.

Almost surely, 2^20957192 is an apocalyptic number.

It is an amenable number.

20957192 is a deficient number, since it is larger than the sum of its proper divisors (20649268).

20957192 is a wasteful number, since it uses less digits than its factorization.

20957192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154120 (or 154116 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 20957192 is about 4577.9025765082. The cubic root of 20957192 is about 275.7048234034.

The spelling of 20957192 in words is "twenty million, nine hundred fifty-seven thousand, one hundred ninety-two".