22686628 has 12 divisors (see below), whose sum is σ = 40625200. Its totient is φ = 11079432.

The previous prime is 22686617. The next prime is 22686647. The reversal of 22686628 is 82668622.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 65778 + ... + 66121.

Almost surely, 2^22686628 is an apocalyptic number.

It is an amenable number.

22686628 is a deficient number, since it is larger than the sum of its proper divisors (17938572).

22686628 is a wasteful number, since it uses less digits than its factorization.

22686628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131946 (or 131944 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 22686628 is about 4763.0481836740. The cubic root of 22686628 is about 283.0892100978.

The spelling of 22686628 in words is "twenty-two million, six hundred eighty-six thousand, six hundred twenty-eight".