20972204 has 18 divisors (see below), whose sum is σ = 40342092. Its totient is φ = 9532600.

The previous prime is 20972179. The next prime is 20972221. The reversal of 20972204 is 40227902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21182 + ... + 22149.

Almost surely, 2^20972204 is an apocalyptic number.

It is an amenable number.

20972204 is a deficient number, since it is larger than the sum of its proper divisors (19369888).

20972204 is a wasteful number, since it uses less digits than its factorization.

20972204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43357 (or 43344 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20972204 is about 4579.5418984872. The cubic root of 20972204 is about 275.7706384062.

The spelling of 20972204 in words is "twenty million, nine hundred seventy-two thousand, two hundred four".