22604224 has 56 divisors (see below), whose sum is σ = 48920400. Its totient is φ = 10321920.

The previous prime is 22604209. The next prime is 22604233. The reversal of 22604224 is 42240622.

It is a junction number, because it is equal to n+sod(n) for n = 22604195 and 22604204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34944 + ... + 35584.

Almost surely, 2^22604224 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 22604224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24460200).

22604224 is an abundant number, since it is smaller than the sum of its proper divisors (26316176).

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

22604224 is a wasteful number, since it uses less digits than its factorization.

22604224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 22604224 is about 4754.3899713843. The cubic root of 22604224 is about 282.7460419466.

Adding to 22604224 its reverse (42240622), we get a palindrome (64844846).

The spelling of 22604224 in words is "twenty-two million, six hundred four thousand, two hundred twenty-four".