23090265 has 80 divisors (see below), whose sum is σ = 46417536. Its totient is φ = 10886400.

The previous prime is 23090261. The next prime is 23090281. The reversal of 23090265 is 56209032.

It is not a de Polignac number, because 23090265 - 2² = 23090261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23090261) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 316269 + ... + 316341.

Almost surely, 2^23090265 is an apocalyptic number.

It is an amenable number.

23090265 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

23090265 is a wasteful number, since it uses less digits than its factorization.

23090265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 23090265 is about 4805.2330848774. The cubic root of 23090265 is about 284.7582437374.

Adding to 23090265 its reverse (56209032), we get a palindrome (79299297).

The spelling of 23090265 in words is "twenty-three million, ninety thousand, two hundred sixty-five".