22438164 has 96 divisors (see below), whose sum is σ = 66769920. Its totient is φ = 5709312.

The previous prime is 22438153. The next prime is 22438177. The reversal of 22438164 is 46183422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26719 + ... + 27545.

It is an arithmetic number, because the mean of its divisors is an integer number (695520).

Almost surely, 2^22438164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22438164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33384960).

22438164 is an abundant number, since it is smaller than the sum of its proper divisors (44331756).

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

22438164 is a wasteful number, since it uses less digits than its factorization.

22438164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 875 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 22438164 is about 4736.8939190149. The cubic root of 22438164 is about 282.0519495863.

The spelling of 22438164 in words is "twenty-two million, four hundred thirty-eight thousand, one hundred sixty-four".