23297857 has 12 divisors (see below), whose sum is σ = 26828496. Its totient is φ = 20061720.

The previous prime is 23297849. The next prime is 23297863. The reversal of 23297857 is 75879232.

It is not a de Polignac number, because 23297857 - 2³ = 23297849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23297257) 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, 1038 + ... + 6904.

It is an arithmetic number, because the mean of its divisors is an integer number (2235708).

Almost surely, 2^23297857 is an apocalyptic number.

It is an amenable number.

23297857 is a deficient number, since it is larger than the sum of its proper divisors (3530639).

23297857 is a wasteful number, since it uses less digits than its factorization.

23297857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5916 (or 5897 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 23297857 is about 4826.7853691665. The cubic root of 23297857 is about 285.6090678165.

It can be divided in two parts, 232 and 97857, that added together give a palindrome (98089).

The spelling of 23297857 in words is "twenty-three million, two hundred ninety-seven thousand, eight hundred fifty-seven".