20125928 has 16 divisors (see below), whose sum is σ = 38756580. Its totient is φ = 9790848.

The previous prime is 20125907. The next prime is 20125979. The reversal of 20125928 is 82952102.

It can be written as a sum of positive squares in 2 ways, for example, as 17623204 + 2502724 = 4198^2 + 1582^2 .

It is a super-2 number, since 2×20125928² = 810105955722368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20125928.

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, 33701 + ... + 34292.

Almost surely, 2^20125928 is an apocalyptic number.

It is an amenable number.

20125928 is a deficient number, since it is larger than the sum of its proper divisors (18630652).

20125928 is a wasteful number, since it uses less digits than its factorization.

20125928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68036 (or 68032 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 20125928 is about 4486.1930408755. The cubic root of 20125928 is about 272.0102721034.

The spelling of 20125928 in words is "twenty million, one hundred twenty-five thousand, nine hundred twenty-eight".