22993904 has 20 divisors (see below), whose sum is σ = 45500064. Its totient is φ = 11251968.

The previous prime is 22993903. The next prime is 22993913. The reversal of 22993904 is 40939922.

It is a super-2 number, since 2×22993904² = 1057439242322432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22993903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14537 + ... + 16040.

Almost surely, 2^22993904 is an apocalyptic number.

It is an amenable number.

22993904 is a deficient number, since it is larger than the sum of its proper divisors (22506160).

22993904 is a wasteful number, since it uses less digits than its factorization.

22993904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30632 (or 30626 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 22993904 is about 4795.1959292609. The cubic root of 22993904 is about 284.3615708186.

The spelling of 22993904 in words is "twenty-two million, nine hundred ninety-three thousand, nine hundred four".