23638404 has 24 divisors (see below), whose sum is σ = 55981408. Its totient is φ = 7761600.

The previous prime is 23638387. The next prime is 23638429. The reversal of 23638404 is 40483632.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13897 + ... + 15504.

Almost surely, 2^23638404 is an apocalyptic number.

It is an amenable number.

23638404 is an abundant number, since it is smaller than the sum of its proper divisors (32343004).

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

23638404 is a wasteful number, since it uses less digits than its factorization.

23638404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29475 (or 29473 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 23638404 is about 4861.9341830181. The cubic root of 23638404 is about 286.9939336737.

It can be divided in two parts, 23638 and 404, that added together give a palindrome (24042).

The spelling of 23638404 in words is "twenty-three million, six hundred thirty-eight thousand, four hundred four".