23985857 has 8 divisors (see below), whose sum is σ = 27451200. Its totient is φ = 20530224.

The previous prime is 23985833. The next prime is 23985877. The reversal of 23985857 is 75858932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23985857 - 2¹⁰ = 23984833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23985817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4019 + ... + 8007.

It is an arithmetic number, because the mean of its divisors is an integer number (3431400).

Almost surely, 2^23985857 is an apocalyptic number.

It is an amenable number.

23985857 is a deficient number, since it is larger than the sum of its proper divisors (3465343).

23985857 is an equidigital number, since it uses as much as digits as its factorization.

23985857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4855.

The product of its digits is 604800, while the sum is 47.

The square root of 23985857 is about 4897.5358089554. The cubic root of 23985857 is about 288.3932425511.

It can be divided in two parts, 23985 and 857, that added together give a palindrome (24842).

The spelling of 23985857 in words is "twenty-three million, nine hundred eighty-five thousand, eight hundred fifty-seven".