22722504 has 64 divisors (see below), whose sum is σ = 67031040. Its totient is φ = 6281280.

The previous prime is 22722481. The next prime is 22722509. The reversal of 22722504 is 40522722.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22722509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3027 + ... + 7389.

It is an arithmetic number, because the mean of its divisors is an integer number (1047360).

Almost surely, 2^22722504 is an apocalyptic number.

22722504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22722504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33515520).

22722504 is an abundant number, since it is smaller than the sum of its proper divisors (44308536).

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

22722504 is a wasteful number, since it uses less digits than its factorization.

22722504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410 (or 4406 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 22722504 is about 4766.8127716536. The cubic root of 22722504 is about 283.2383546316.

The spelling of 22722504 in words is "twenty-two million, seven hundred twenty-two thousand, five hundred four".