22904228 has 24 divisors (see below), whose sum is σ = 42723072. Its totient is φ = 10719104.

The previous prime is 22904227. The next prime is 22904243. The reversal of 22904228 is 82240922.

It is a self number, because there is not a number n which added to its sum of digits gives 22904228.

It is not an unprimeable number, because it can be changed into a prime (22904227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1676 + ... + 6972.

It is an arithmetic number, because the mean of its divisors is an integer number (1780128).

Almost surely, 2^22904228 is an apocalyptic number.

It is an amenable number.

22904228 is a deficient number, since it is larger than the sum of its proper divisors (19818844).

22904228 is a wasteful number, since it uses less digits than its factorization.

22904228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5371 (or 5369 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 22904228 is about 4785.8361860808. The cubic root of 22904228 is about 283.9914200939.

It can be divided in two parts, 22904 and 228, that added together give a palindrome (23132).

The spelling of 22904228 in words is "twenty-two million, nine hundred four thousand, two hundred twenty-eight".