22122304 has 28 divisors (see below), whose sum is σ = 46483524. Its totient is φ = 10409984.

The previous prime is 22122299. The next prime is 22122311. The reversal of 22122304 is 40322122.

It can be written as a sum of positive squares in 2 ways, for example, as 19713600 + 2408704 = 4440^2 + 1552^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 9079 + ... + 11254.

Almost surely, 2^22122304 is an apocalyptic number.

It is an amenable number.

22122304 is an abundant number, since it is smaller than the sum of its proper divisors (24361220).

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

22122304 is a wasteful number, since it uses less digits than its factorization.

22122304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20362 (or 20352 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22122304 is about 4703.4353402593. The cubic root of 22122304 is about 280.7222171822.

Adding to 22122304 its reverse (40322122), we get a palindrome (62444426).

The spelling of 22122304 in words is "twenty-two million, one hundred twenty-two thousand, three hundred four".