23639265 has 48 divisors (see below), whose sum is σ = 46741968. Its totient is φ = 10948608.

The previous prime is 23639257. The next prime is 23639279. The reversal of 23639265 is 56293632.

It can be written as a sum of positive squares in 8 ways, for example, as 685584 + 22953681 = 828^2 + 4791^2 .

It is not a de Polignac number, because 23639265 - 2³ = 23639257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8757 + ... + 11133.

It is an arithmetic number, because the mean of its divisors is an integer number (973791).

Almost surely, 2^23639265 is an apocalyptic number.

It is an amenable number.

23639265 is a deficient number, since it is larger than the sum of its proper divisors (23102703).

23639265 is a wasteful number, since it uses less digits than its factorization.

23639265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418 (or 2415 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 23639265 is about 4862.0227272196. The cubic root of 23639265 is about 286.9974180993.

It can be divided in two parts, 2363 and 9265, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 23639265 in words is "twenty-three million, six hundred thirty-nine thousand, two hundred sixty-five".