22804992 has 180 divisors, whose sum is σ = 77320386. Its totient is φ = 6451200.

The previous prime is 22804967. The next prime is 22805023. The reversal of 22804992 is 29940822.

It can be written as a sum of positive squares in only one way, i.e., 13660416 + 9144576 = 3696^2 + 3024^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 225742 + ... + 225842.

Almost surely, 2^22804992 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 22804992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38660193).

22804992 is an abundant number, since it is smaller than the sum of its proper divisors (54515394).

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

22804992 is a wasteful number, since it uses less digits than its factorization.

22804992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 22804992 is about 4775.4572555934. The cubic root of 22804992 is about 283.5806811977.

The spelling of 22804992 in words is "twenty-two million, eight hundred four thousand, nine hundred ninety-two".