22991056 has 20 divisors (see below), whose sum is σ = 48595104. Its totient is φ = 10450400.

The previous prime is 22991051. The next prime is 22991063. The reversal of 22991056 is 65019922.

22991056 = 59² + 60² + ... + 410².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22991051) 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, 65140 + ... + 65491.

Almost surely, 2^22991056 is an apocalyptic number.

It is an amenable number.

22991056 is an abundant number, since it is smaller than the sum of its proper divisors (25604048).

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

22991056 is a wasteful number, since it uses less digits than its factorization.

22991056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130650 (or 130644 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 22991056 is about 4794.8989561825. The cubic root of 22991056 is about 284.3498300953.

The spelling of 22991056 in words is "twenty-two million, nine hundred ninety-one thousand, fifty-six".