23957857 has 16 divisors (see below), whose sum is σ = 30902400. Its totient is φ = 18023040.

The previous prime is 23957851. The next prime is 23957861. The reversal of 23957857 is 75875932.

It is not a de Polignac number, because 23957857 - 2³ = 23957849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23957851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3132 + ... + 7597.

It is an arithmetic number, because the mean of its divisors is an integer number (1931400).

Almost surely, 2^23957857 is an apocalyptic number.

It is an amenable number.

23957857 is a deficient number, since it is larger than the sum of its proper divisors (6944543).

23957857 is a wasteful number, since it uses less digits than its factorization.

23957857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10776.

The product of its digits is 529200, while the sum is 46.

The square root of 23957857 is about 4894.6763937977. The cubic root of 23957857 is about 288.2809797989.

The spelling of 23957857 in words is "twenty-three million, nine hundred fifty-seven thousand, eight hundred fifty-seven".