22956643920 has 160 divisors (see below), whose sum is σ = 83223816192. Its totient is φ = 5125188096.

The previous prime is 22956643909. The next prime is 22956643937. The reversal of 22956643920 is 2934665922.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 22956643920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86652 + ... + 231131.

Almost surely, 2^22956643920 is an apocalyptic number.

22956643920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22956643920 is an abundant number, since it is smaller than the sum of its proper divisors (60267172272).

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

22956643920 is a wasteful number, since it uses less digits than its factorization.

22956643920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317849 (or 317843 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 22956643920 in words is "twenty-two billion, nine hundred fifty-six million, six hundred forty-three thousand, nine hundred twenty".