23724 has 18 divisors (see below), whose sum is σ = 60060. Its totient is φ = 7896.

The previous prime is 23719. The next prime is 23741. The reversal of 23724 is 42732.

It is a happy number.

23724 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23697 and 23706.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 294 + ... + 365.

2²³⁷²⁴ is an apocalyptic number.

It is an amenable number.

23724 is an abundant number, since it is smaller than the sum of its proper divisors (36336).

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

23724 is a wasteful number, since it uses less digits than its factorization.

23724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 664 counting only the distinct ones).

The product of its digits is 336, while the sum is 18.

The square root of 23724 is about 154.0259718359. The cubic root of 23724 is about 28.7339923490.

It can be divided in two parts, 23 and 724, that added together give a palindrome (747).

The spelling of 23724 in words is "twenty-three thousand, seven hundred twenty-four", and thus it is an iban number.