22718957 has 4 divisors (see below), whose sum is σ = 22799520. Its totient is φ = 22638396.

The previous prime is 22718929. The next prime is 22718959. The reversal of 22718957 is 75981722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22718957 - 2⁶ = 22718893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22718959) 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, 39857 + ... + 40422.

It is an arithmetic number, because the mean of its divisors is an integer number (5699880).

Almost surely, 2^22718957 is an apocalyptic number.

It is an amenable number.

22718957 is a deficient number, since it is larger than the sum of its proper divisors (80563).

22718957 is an equidigital number, since it uses as much as digits as its factorization.

22718957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80562.

The product of its digits is 70560, while the sum is 41.

The square root of 22718957 is about 4766.4407055999. The cubic root of 22718957 is about 283.2236159578.

The spelling of 22718957 in words is "twenty-two million, seven hundred eighteen thousand, nine hundred fifty-seven".