23736 has 32 divisors (see below), whose sum is σ = 63360. Its totient is φ = 7392.

The previous prime is 23719. The next prime is 23741. The reversal of 23736 is 63732.

23736 = T₇₃ + T₇₄ + ... + T₈₀.

23736 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 531 + ... + 573.

It is an arithmetic number, because the mean of its divisors is an integer number (1980).

2²³⁷³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31680).

23736 is an abundant number, since it is smaller than the sum of its proper divisors (39624).

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

23736 is a wasteful number, since it uses less digits than its factorization.

23736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 71 counting only the distinct ones).

The product of its digits is 756, while the sum is 21.

The square root of 23736 is about 154.0649213806. The cubic root of 23736 is about 28.7388362453.

The spelling of 23736 in words is "twenty-three thousand, seven hundred thirty-six".