23903265 has 32 divisors (see below), whose sum is σ = 39470976. Its totient is φ = 12346880.

The previous prime is 23903261. The next prime is 23903293. The reversal of 23903265 is 56230932.

It is not a de Polignac number, because 23903265 - 2² = 23903261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23903261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84925 + ... + 85205.

It is an arithmetic number, because the mean of its divisors is an integer number (1233468).

Almost surely, 2^23903265 is an apocalyptic number.

It is an amenable number.

23903265 is a deficient number, since it is larger than the sum of its proper divisors (15567711).

23903265 is a wasteful number, since it uses less digits than its factorization.

23903265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 23903265 is about 4889.0965423072. The cubic root of 23903265 is about 288.0618477320.

The spelling of 23903265 in words is "twenty-three million, nine hundred three thousand, two hundred sixty-five".