22401904 has 20 divisors (see below), whose sum is σ = 49604464. Its totient is φ = 9600768.

The previous prime is 22401889. The next prime is 22401947. The reversal of 22401904 is 40910422.

It is a congruent number.

It is an unprimeable number.

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, 99897 + ... + 100120.

Almost surely, 2^22401904 is an apocalyptic number.

It is an amenable number.

22401904 is an abundant number, since it is smaller than the sum of its proper divisors (27202560).

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

22401904 is a wasteful number, since it uses less digits than its factorization.

22401904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200032 (or 200026 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 22401904 is about 4733.0649689181. The cubic root of 22401904 is about 281.8999359949.

The spelling of 22401904 in words is "twenty-two million, four hundred one thousand, nine hundred four".