22224704 has 56 divisors (see below), whose sum is σ = 46012608. Its totient is φ = 10644480.

The previous prime is 22224689. The next prime is 22224707. The reversal of 22224704 is 40742222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22224704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22224707) by changing a digit.

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, 304412 + ... + 304484.

Almost surely, 2^22224704 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 22224704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23006304).

22224704 is an abundant number, since it is smaller than the sum of its proper divisors (23787904).

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

22224704 is an equidigital number, since it uses as much as digits as its factorization.

22224704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 22224704 is about 4714.3084328457. The cubic root of 22224704 is about 281.1546874399.

Adding to 22224704 its reverse (40742222), we get a palindrome (62966926).

The spelling of 22224704 in words is "twenty-two million, two hundred twenty-four thousand, seven hundred four".