23638236 has 24 divisors (see below), whose sum is σ = 55288464. Its totient is φ = 7860480.

The previous prime is 23638231. The next prime is 23638247. The reversal of 23638236 is 63283632.

It is a junction number, because it is equal to n+sod(n) for n = 23638197 and 23638206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23638231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3396 + ... + 7668.

It is an arithmetic number, because the mean of its divisors is an integer number (2303686).

Almost surely, 2^23638236 is an apocalyptic number.

It is an amenable number.

23638236 is an abundant number, since it is smaller than the sum of its proper divisors (31650228).

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

23638236 is a wasteful number, since it uses less digits than its factorization.

23638236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741 (or 4739 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 23638236 is about 4861.9169059127. The cubic root of 23638236 is about 286.9932537760.

The spelling of 23638236 in words is "twenty-three million, six hundred thirty-eight thousand, two hundred thirty-six".