22536556 has 12 divisors (see below), whose sum is σ = 45073168. Its totient is φ = 9658512.

The previous prime is 22536541. The next prime is 22536571. The reversal of 22536556 is 65563522.

It is an interprime number because it is at equal distance from previous prime (22536541) and next prime (22536571).

22536556 is an admirable number.

It is a super-2 number, since 2×22536556² = 1015792712682272, which contains 22 as substring.

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, 402411 + ... + 402466.

Almost surely, 2^22536556 is an apocalyptic number.

It is an amenable number.

22536556 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.

22536556 is a wasteful number, since it uses less digits than its factorization.

22536556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804888 (or 804886 counting only the distinct ones).

The product of its digits is 54000, while the sum is 34.

The square root of 22536556 is about 4747.2682671195. The cubic root of 22536556 is about 282.4636171068.

The spelling of 22536556 in words is "twenty-two million, five hundred thirty-six thousand, five hundred fifty-six".