22905872 has 20 divisors (see below), whose sum is σ = 48415056. Its totient is φ = 10411680.

The previous prime is 22905863. The next prime is 22905877. The reversal of 22905872 is 27850922.

It is not an unprimeable number, because it can be changed into a prime (22905877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64898 + ... + 65249.

Almost surely, 2^22905872 is an apocalyptic number.

22905872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22905872 is an abundant number, since it is smaller than the sum of its proper divisors (25509184).

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

22905872 is a wasteful number, since it uses less digits than its factorization.

22905872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130166 (or 130160 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 22905872 is about 4786.0079398179. The cubic root of 22905872 is about 283.9982146287.

The spelling of 22905872 in words is "twenty-two million, nine hundred five thousand, eight hundred seventy-two".