20972922 has 16 divisors (see below), whose sum is σ = 44153760. Its totient is φ = 6622992.

The previous prime is 20972921. The next prime is 20972933. The reversal of 20972922 is 22927902.

It is not an unprimeable number, because it can be changed into a prime (20972921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91873 + ... + 92100.

It is an arithmetic number, because the mean of its divisors is an integer number (2759610).

Almost surely, 2^20972922 is an apocalyptic number.

20972922 is an abundant number, since it is smaller than the sum of its proper divisors (23180838).

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

20972922 is a wasteful number, since it uses less digits than its factorization.

20972922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183997.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 20972922 is about 4579.6202899367. The cubic root of 20972922 is about 275.7737854456.

The spelling of 20972922 in words is "twenty million, nine hundred seventy-two thousand, nine hundred twenty-two".