22389904 has 20 divisors (see below), whose sum is σ = 45664240. Its totient is φ = 10605600.

The previous prime is 22389893. The next prime is 22389911. The reversal of 22389904 is 40998322.

It is a super-2 number, since 2×22389904² = 1002615602258432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36522 + ... + 37129.

It is an arithmetic number, because the mean of its divisors is an integer number (2283212).

Almost surely, 2^22389904 is an apocalyptic number.

It is an amenable number.

22389904 is an abundant number, since it is smaller than the sum of its proper divisors (23274336).

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

22389904 is a wasteful number, since it uses less digits than its factorization.

22389904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73678 (or 73672 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 22389904 is about 4731.7971216019. The cubic root of 22389904 is about 281.8495920088.

The spelling of 22389904 in words is "twenty-two million, three hundred eighty-nine thousand, nine hundred four".