22732864 has 84 divisors (see below), whose sum is σ = 57332880. Its totient is φ = 8843520.

The previous prime is 22732789. The next prime is 22732867. The reversal of 22732864 is 46823722.

It is a super-4 number, since 4×22732864⁴ (a number of 31 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (22732867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34167 + ... + 34825.

Almost surely, 2^22732864 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 22732864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28666440).

22732864 is an abundant number, since it is smaller than the sum of its proper divisors (34600016).

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

22732864 is a wasteful number, since it uses less digits than its factorization.

22732864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 679 counting only the distinct ones).

The product of its digits is 32256, while the sum is 34.

The square root of 22732864 is about 4767.8993277963. The cubic root of 22732864 is about 283.2813942472.

The spelling of 22732864 in words is "twenty-two million, seven hundred thirty-two thousand, eight hundred sixty-four".