22664920 has 32 divisors (see below), whose sum is σ = 51963120. Its totient is φ = 8894080.

The previous prime is 22664899. The next prime is 22664933. The reversal of 22664920 is 2946622.

It is a congruent number.

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, 3226 + ... + 7465.

Almost surely, 2^22664920 is an apocalyptic number.

22664920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22664920 is an abundant number, since it is smaller than the sum of its proper divisors (29298200).

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

22664920 is a wasteful number, since it uses less digits than its factorization.

22664920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10755 (or 10751 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 22664920 is about 4760.7688454702. The cubic root of 22664920 is about 282.9988887319.

The spelling of 22664920 in words is "twenty-two million, six hundred sixty-four thousand, nine hundred twenty".