23604 has 24 divisors (see below), whose sum is σ = 63168. Its totient is φ = 6720.

The previous prime is 23603. The next prime is 23609. The reversal of 23604 is 40632.

23604 is an esthetic number in base 13, because in such base its adjacent digits differ by 1.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57 + ... + 224.

It is an arithmetic number, because the mean of its divisors is an integer number (2632).

2²³⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

23604 is an abundant number, since it is smaller than the sum of its proper divisors (39564).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31584).

23604 is a wasteful number, since it uses less digits than its factorization.

23604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23604 is about 153.6359332969. The cubic root of 23604 is about 28.6854633049.

The spelling of 23604 in words is "twenty-three thousand, six hundred four".