22208864 has 24 divisors (see below), whose sum is σ = 44047080. Its totient is φ = 11022336.

The previous prime is 22208833. The next prime is 22208903. The reversal of 22208864 is 46880222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 22208864.

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, 1952 + ... + 6944.

It is an arithmetic number, because the mean of its divisors is an integer number (1835295).

Almost surely, 2^22208864 is an apocalyptic number.

It is an amenable number.

22208864 is a deficient number, since it is larger than the sum of its proper divisors (21838216).

22208864 is a wasteful number, since it uses less digits than its factorization.

22208864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142 (or 5134 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 22208864 is about 4712.6281414939. The cubic root of 22208864 is about 281.0878766708.

The spelling of 22208864 in words is "twenty-two million, two hundred eight thousand, eight hundred sixty-four".