22921375 has 16 divisors (see below), whose sum is σ = 28765152. Its totient is φ = 18235200.

The previous prime is 22921361. The next prime is 22921399. The reversal of 22921375 is 57312922.

It is not a de Polignac number, because 22921375 - 2⁷ = 22921247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28732 + ... + 29518.

It is an arithmetic number, because the mean of its divisors is an integer number (1797822).

Almost surely, 2^22921375 is an apocalyptic number.

22921375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22921375 is a deficient number, since it is larger than the sum of its proper divisors (5843777).

22921375 is an equidigital number, since it uses as much as digits as its factorization.

22921375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1025 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 22921375 is about 4787.6272829033. The cubic root of 22921375 is about 284.0622714406.

The spelling of 22921375 in words is "twenty-two million, nine hundred twenty-one thousand, three hundred seventy-five".