22904128 has 28 divisors (see below), whose sum is σ = 48948340. Its totient is φ = 10570752.

The previous prime is 22904111. The next prime is 22904129. The reversal of 22904128 is 82140922.

It can be written as a sum of positive squares in 2 ways, for example, as 5531904 + 17372224 = 2352^2 + 4168^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22904096 and 22904105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22904129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12933 + ... + 14596.

It is an arithmetic number, because the mean of its divisors is an integer number (1748155).

Almost surely, 2^22904128 is an apocalyptic number.

It is an amenable number.

22904128 is an abundant number, since it is smaller than the sum of its proper divisors (26044212).

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

22904128 is a wasteful number, since it uses less digits than its factorization.

22904128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27554 (or 27544 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 22904128 is about 4785.8257385743. The cubic root of 22904128 is about 283.9910067905.

It can be divided in two parts, 22904 and 128, that added together give a palindrome (23032).

The spelling of 22904128 in words is "twenty-two million, nine hundred four thousand, one hundred twenty-eight".