23165285 has 32 divisors (see below), whose sum is σ = 33022080. Its totient is φ = 15379200.

The previous prime is 23165281. The next prime is 23165291. The reversal of 23165285 is 58256132.

It is not a de Polignac number, because 23165285 - 2² = 23165281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23165281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127895 + ... + 128075.

It is an arithmetic number, because the mean of its divisors is an integer number (1031940).

Almost surely, 2^23165285 is an apocalyptic number.

It is an amenable number.

23165285 is a deficient number, since it is larger than the sum of its proper divisors (9856795).

23165285 is a wasteful number, since it uses less digits than its factorization.

23165285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389.

The product of its digits is 14400, while the sum is 32.

The square root of 23165285 is about 4813.0328276462. The cubic root of 23165285 is about 285.0663024156.

The spelling of 23165285 in words is "twenty-three million, one hundred sixty-five thousand, two hundred eighty-five".