20922458 has 16 divisors (see below), whose sum is σ = 34103040. Its totient is φ = 9590400.

The previous prime is 20922413. The next prime is 20922463. The reversal of 20922458 is 85422902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7703 + ... + 10058.

It is an arithmetic number, because the mean of its divisors is an integer number (2131440).

Almost surely, 2^20922458 is an apocalyptic number.

20922458 is a deficient number, since it is larger than the sum of its proper divisors (13180582).

20922458 is a wasteful number, since it uses less digits than its factorization.

20922458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17813.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20922458 is about 4574.1073446083. The cubic root of 20922458 is about 275.5524234262.

The spelling of 20922458 in words is "twenty million, nine hundred twenty-two thousand, four hundred fifty-eight".