20500922 has 8 divisors (see below), whose sum is σ = 33116916. Its totient is φ = 9461952.

The previous prime is 20500901. The next prime is 20500939. The reversal of 20500922 is 22900502.

It can be written as a sum of positive squares in 2 ways, for example, as 18395521 + 2105401 = 4289^2 + 1451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20500894 and 20500903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394223 + ... + 394274.

Almost surely, 2^20500922 is an apocalyptic number.

20500922 is a deficient number, since it is larger than the sum of its proper divisors (12615994).

20500922 is a wasteful number, since it uses less digits than its factorization.

20500922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788512.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 20500922 is about 4527.7943857909. The cubic root of 20500922 is about 273.6892867311.

The spelling of 20500922 in words is "twenty million, five hundred thousand, nine hundred twenty-two".