20922928 has 20 divisors (see below), whose sum is σ = 43656928. Its totient is φ = 9656640.

The previous prime is 20922911. The next prime is 20922931. The reversal of 20922928 is 82922902.

It is a junction number, because it is equal to n+sod(n) for n = 20922893 and 20922902.

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, 50088 + ... + 50503.

Almost surely, 2^20922928 is an apocalyptic number.

It is an amenable number.

20922928 is an abundant number, since it is smaller than the sum of its proper divisors (22734000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20922928 is a wasteful number, since it uses less digits than its factorization.

20922928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100612 (or 100606 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 20922928 is about 4574.1587204643. The cubic root of 20922928 is about 275.5544867381.

The spelling of 20922928 in words is "twenty million, nine hundred twenty-two thousand, nine hundred twenty-eight".