22168956 has 12 divisors (see below), whose sum is σ = 51727592. Its totient is φ = 7389648.

The previous prime is 22168943. The next prime is 22168961. The reversal of 22168956 is 65986122.

22168956 = 519² + 520² + ... + 590².

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

It is a super-2 number, since 2×22168956² = 982925220259872, which contains 22 as substring.

It is a congruent number.

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, 923695 + ... + 923718.

Almost surely, 2^22168956 is an apocalyptic number.

It is an amenable number.

22168956 is an abundant number, since it is smaller than the sum of its proper divisors (29558636).

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

22168956 is a wasteful number, since it uses less digits than its factorization.

22168956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847420 (or 1847418 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 22168956 is about 4708.3920822293. The cubic root of 22168956 is about 280.9194096892.

The spelling of 22168956 in words is "twenty-two million, one hundred sixty-eight thousand, nine hundred fifty-six".