23500857 has 4 divisors (see below), whose sum is σ = 31334480. Its totient is φ = 15667236.

The previous prime is 23500847. The next prime is 23500861. The reversal of 23500857 is 75800532.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23500857 - 2⁸ = 23500601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23500847) 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, 3916807 + ... + 3916812.

It is an arithmetic number, because the mean of its divisors is an integer number (7833620).

Almost surely, 2^23500857 is an apocalyptic number.

It is an amenable number.

23500857 is a deficient number, since it is larger than the sum of its proper divisors (7833623).

23500857 is an equidigital number, since it uses as much as digits as its factorization.

23500857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7833622.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 23500857 is about 4847.7682494113. The cubic root of 23500857 is about 286.4361976410.

The spelling of 23500857 in words is "twenty-three million, five hundred thousand, eight hundred fifty-seven".