23864 has 16 divisors (see below), whose sum is σ = 47400. Its totient is φ = 11232.

The previous prime is 23857. The next prime is 23869. The reversal of 23864 is 46832.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23869) 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, 74 + ... + 230.

2²³⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

23864 is a deficient number, since it is larger than the sum of its proper divisors (23536).

23864 is a wasteful number, since it uses less digits than its factorization.

23864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 178 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 23864 is about 154.4797721386. The cubic root of 23864 is about 28.7904031811.

The spelling of 23864 in words is "twenty-three thousand, eight hundred sixty-four".