22722636 has 24 divisors (see below), whose sum is σ = 53214784. Its totient is φ = 7546320.

The previous prime is 22722629. The next prime is 22722641. The reversal of 22722636 is 63622722.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51 + ... + 6741.

Almost surely, 2^22722636 is an apocalyptic number.

It is an amenable number.

22722636 is an abundant number, since it is smaller than the sum of its proper divisors (30492148).

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

22722636 is a wasteful number, since it uses less digits than its factorization.

22722636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6981 (or 6979 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

The square root of 22722636 is about 4766.8266173630. The cubic root of 22722636 is about 283.2389030951.

The spelling of 22722636 in words is "twenty-two million, seven hundred twenty-two thousand, six hundred thirty-six".