22656372 has 12 divisors (see below), whose sum is σ = 52864896. Its totient is φ = 7552120.

The previous prime is 22656371. The next prime is 22656373. The reversal of 22656372 is 27365622.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22656371) and next prime (22656373).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×22656372² = 1026622384404768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22656371) 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, 944004 + ... + 944027.

It is an arithmetic number, because the mean of its divisors is an integer number (4405408).

Almost surely, 2^22656372 is an apocalyptic number.

It is an amenable number.

22656372 is an abundant number, since it is smaller than the sum of its proper divisors (30208524).

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

22656372 is a wasteful number, since it uses less digits than its factorization.

22656372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888038 (or 1888036 counting only the distinct ones).

The product of its digits is 30240, while the sum is 33.

The square root of 22656372 is about 4759.8710066555. The cubic root of 22656372 is about 282.9633068918.

The spelling of 22656372 in words is "twenty-two million, six hundred fifty-six thousand, three hundred seventy-two".