22646864 has 20 divisors (see below), whose sum is σ = 45294720. Its totient is φ = 10957920.

The previous prime is 22646843. The next prime is 22646891. The reversal of 22646864 is 46864622.

22646864 is an admirable number.

It is a congruent number.

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, 22334 + ... + 23325.

It is an arithmetic number, because the mean of its divisors is an integer number (2264736).

Almost surely, 2^22646864 is an apocalyptic number.

It is an amenable number.

22646864 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.

22646864 is a wasteful number, since it uses less digits than its factorization.

22646864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45698 (or 45692 counting only the distinct ones).

The product of its digits is 110592, while the sum is 38.

The square root of 22646864 is about 4758.8721352858. The cubic root of 22646864 is about 282.9237184475.

The spelling of 22646864 in words is "twenty-two million, six hundred forty-six thousand, eight hundred sixty-four".