22971664 has 20 divisors (see below), whose sum is σ = 46443456. Its totient is φ = 10986272.

The previous prime is 22971647. The next prime is 22971667. The reversal of 22971664 is 46617922.

It is not an unprimeable number, because it can be changed into a prime (22971667) 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, 30844 + ... + 31579.

Almost surely, 2^22971664 is an apocalyptic number.

It is an amenable number.

22971664 is an abundant number, since it is smaller than the sum of its proper divisors (23471792).

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

22971664 is a wasteful number, since it uses less digits than its factorization.

22971664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62454 (or 62448 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 22971664 is about 4792.8763806299. The cubic root of 22971664 is about 284.2698618540.

The spelling of 22971664 in words is "twenty-two million, nine hundred seventy-one thousand, six hundred sixty-four".