23165739 has 12 divisors (see below), whose sum is σ = 33664176. Its totient is φ = 15350352.

The previous prime is 23165707. The next prime is 23165743. The reversal of 23165739 is 93756132.

It is not a de Polignac number, because 23165739 - 2⁵ = 23165707 is a prime.

It is a super-2 number, since 2×23165739² = 1073302926832242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23165759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6204 + ... + 9209.

It is an arithmetic number, because the mean of its divisors is an integer number (2805348).

Almost surely, 2^23165739 is an apocalyptic number.

23165739 is a deficient number, since it is larger than the sum of its proper divisors (10498437).

23165739 is a wasteful number, since it uses less digits than its factorization.

23165739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15586 (or 15583 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 23165739 is about 4813.0799910245. The cubic root of 23165739 is about 285.0681646742.

The spelling of 23165739 in words is "twenty-three million, one hundred sixty-five thousand, seven hundred thirty-nine".