238857 has 8 divisors (see below), whose sum is σ = 321984. Its totient is φ = 157488.

The previous prime is 238853. The next prime is 238859. The reversal of 238857 is 758832.

238857 is nontrivially palindromic in base 13.

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

It is not a de Polignac number, because 238857 - 2² = 238853 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 238857.

It is not an unprimeable number, because it can be changed into a prime (238853) 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, 78 + ... + 695.

It is an arithmetic number, because the mean of its divisors is an integer number (40248).

2²³⁸⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

238857 is a deficient number, since it is larger than the sum of its proper divisors (83127).

238857 is a wasteful number, since it uses less digits than its factorization.

238857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879.

The product of its digits is 13440, while the sum is 33.

The square root of 238857 is about 488.7299868025. The cubic root of 238857 is about 62.0458384571.

The spelling of 238857 in words is "two hundred thirty-eight thousand, eight hundred fifty-seven".