23956 has 12 divisors (see below), whose sum is σ = 43092. Its totient is φ = 11648.

The previous prime is 23929. The next prime is 23957. The reversal of 23956 is 65932.

It can be written as a sum of positive squares in 2 ways, for example, as 7056 + 16900 = 84^2 + 130^2 .

23956 is an undulating number in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 23956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23957) 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, 156 + ... + 268.

It is an arithmetic number, because the mean of its divisors is an integer number (3591).

2²³⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

23956 is a deficient number, since it is larger than the sum of its proper divisors (19136).

23956 is a wasteful number, since it uses less digits than its factorization.

23956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 168 counting only the distinct ones).

The product of its digits is 1620, while the sum is 25.

The square root of 23956 is about 154.7772593116. Note that the first 3 decimals coincide. The cubic root of 23956 is about 28.8273531281.

It can be divided in two parts, 2395 and 6, that added together give a 4-th power (2401 = 7⁴).

The spelling of 23956 in words is "twenty-three thousand, nine hundred fifty-six".