23908253 has 4 divisors (see below), whose sum is σ = 24554460. Its totient is φ = 23262048.

The previous prime is 23908249. The next prime is 23908259. The reversal of 23908253 is 35280932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9972964 + 13935289 = 3158^2 + 3733^2 .

It is not a de Polignac number, because 23908253 - 2² = 23908249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23908259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323048 + ... + 323121.

It is an arithmetic number, because the mean of its divisors is an integer number (6138615).

Almost surely, 2^23908253 is an apocalyptic number.

It is an amenable number.

23908253 is a deficient number, since it is larger than the sum of its proper divisors (646207).

23908253 is an equidigital number, since it uses as much as digits as its factorization.

23908253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646206.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 23908253 is about 4889.6066303947. The cubic root of 23908253 is about 288.0818833849.

The spelling of 23908253 in words is "twenty-three million, nine hundred eight thousand, two hundred fifty-three".