22271956 has 12 divisors (see below), whose sum is σ = 44543968. Its totient is φ = 9545112.

The previous prime is 22271927. The next prime is 22271987. The reversal of 22271956 is 65917222.

22271956 is an admirable number.

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, 397686 + ... + 397741.

Almost surely, 2^22271956 is an apocalyptic number.

It is an amenable number.

22271956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22271956 is a wasteful number, since it uses less digits than its factorization.

22271956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795438 (or 795436 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 22271956 is about 4719.3173235120. The cubic root of 22271956 is about 281.3538009612.

The spelling of 22271956 in words is "twenty-two million, two hundred seventy-one thousand, nine hundred fifty-six".