22938920 has 16 divisors (see below), whose sum is σ = 51612660. Its totient is φ = 9175552.

The previous prime is 22938917. The next prime is 22938943. The reversal of 22938920 is 2983922.

It can be written as a sum of positive squares in 2 ways, for example, as 22905796 + 33124 = 4786^2 + 182^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286697 + ... + 286776.

Almost surely, 2^22938920 is an apocalyptic number.

22938920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22938920 is an abundant number, since it is smaller than the sum of its proper divisors (28673740).

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

22938920 is a wasteful number, since it uses less digits than its factorization.

22938920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573484 (or 573480 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 22938920 is about 4789.4592596660. The cubic root of 22938920 is about 284.1347307567.

The spelling of 22938920 in words is "twenty-two million, nine hundred thirty-eight thousand, nine hundred twenty".