22355664 has 20 divisors (see below), whose sum is σ = 57752256. Its totient is φ = 7451872.

The previous prime is 22355653. The next prime is 22355677. The reversal of 22355664 is 46655322.

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, 232824 + ... + 232919.

Almost surely, 2^22355664 is an apocalyptic number.

22355664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22355664 is an abundant number, since it is smaller than the sum of its proper divisors (35396592).

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

22355664 is a wasteful number, since it uses less digits than its factorization.

22355664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465754 (or 465748 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 22355664 is about 4728.1776616367. The cubic root of 22355664 is about 281.7058448745.

The spelling of 22355664 in words is "twenty-two million, three hundred fifty-five thousand, six hundred sixty-four".