23666256 has 70 divisors (see below), whose sum is σ = 68782490. Its totient is φ = 7884864.

The previous prime is 23666221. The next prime is 23666317. The reversal of 23666256 is 65266632.

It can be written as a sum of positive squares in only one way, i.e., 23619600 + 46656 = 4860^2 + 216^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 23666256.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 10650 + ... + 12678.

It is an arithmetic number, because the mean of its divisors is an integer number (982607).

Almost surely, 2^23666256 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 23666256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34391245).

23666256 is an abundant number, since it is smaller than the sum of its proper divisors (45116234).

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

23666256 is an equidigital number, since it uses as much as digits as its factorization.

23666256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2034 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 23666256 is about 4864.7976319678. The cubic root of 23666256 is about 287.1066065047.

The spelling of 23666256 in words is "twenty-three million, six hundred sixty-six thousand, two hundred fifty-six".