23656 has 8 divisors (see below), whose sum is σ = 44370. Its totient is φ = 11824.

The previous prime is 23633. The next prime is 23663. The reversal of 23656 is 65632.

It can be written as a sum of positive squares in only one way, i.e., 22500 + 1156 = 150^2 + 34^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 14.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1471 + ... + 1486.

2²³⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

23656 is a deficient number, since it is larger than the sum of its proper divisors (20714).

23656 is a wasteful number, since it uses less digits than its factorization.

23656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963 (or 2959 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 23656 is about 153.8050714378. The cubic root of 23656 is about 28.7065127041.

It can be divided in two parts, 236 and 56, that added together give a palindrome (292).

The spelling of 23656 in words is "twenty-three thousand, six hundred fifty-six".