23509269 has 18 divisors (see below), whose sum is σ = 39502710. Its totient is φ = 13433616.

The previous prime is 23509237. The next prime is 23509273. The reversal of 23509269 is 96290532.

It can be written as a sum of positive squares in only one way, i.e., 18173169 + 5336100 = 4263^2 + 2310^2 .

It is not a de Polignac number, because 23509269 - 2⁵ = 23509237 is a prime.

It is a super-2 number, since 2×23509269² = 1105371457828722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23509219) 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 17 ways as a sum of consecutive naturals, for example, 26214 + ... + 27095.

It is an arithmetic number, because the mean of its divisors is an integer number (2194595).

Almost surely, 2^23509269 is an apocalyptic number.

It is an amenable number.

23509269 is a deficient number, since it is larger than the sum of its proper divisors (15993441).

23509269 is a wasteful number, since it uses less digits than its factorization.

23509269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53329 (or 53319 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 23509269 is about 4848.6357875180. The cubic root of 23509269 is about 286.4703696411.

The spelling of 23509269 in words is "twenty-three million, five hundred nine thousand, two hundred sixty-nine".