20322872 has 16 divisors (see below), whose sum is σ = 38178000. Its totient is φ = 10142080.

The previous prime is 20322833. The next prime is 20322919. The reversal of 20322872 is 27822302.

It is a congruent number.

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, 2672 + ... + 6912.

It is an arithmetic number, because the mean of its divisors is an integer number (2386125).

Almost surely, 2^20322872 is an apocalyptic number.

It is an amenable number.

20322872 is a deficient number, since it is larger than the sum of its proper divisors (17855128).

20322872 is a wasteful number, since it uses less digits than its factorization.

20322872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4846 (or 4842 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20322872 is about 4508.0896175653. The cubic root of 20322872 is about 272.8946535891.

The spelling of 20322872 in words is "twenty million, three hundred twenty-two thousand, eight hundred seventy-two".