238865 has 16 divisors (see below), whose sum is σ = 323136. Its totient is φ = 168000.

The previous prime is 238859. The next prime is 238877. The reversal of 238865 is 568832.

It is not a de Polignac number, because 238865 - 2⁶ = 238801 is a prime.

Its product of digits (11520) is a multiple of the sum of its prime divisors (160).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2315 + ... + 2415.

It is an arithmetic number, because the mean of its divisors is an integer number (20196).

2²³⁸⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

238865 is a deficient number, since it is larger than the sum of its proper divisors (84271).

238865 is a wasteful number, since it uses less digits than its factorization.

238865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160.

The product of its digits is 11520, while the sum is 32.

The square root of 238865 is about 488.7381712124. The cubic root of 238865 is about 62.0465311465.

It can be divided in two parts, 23 and 8865, that added together give a palindrome (8888).

The spelling of 238865 in words is "two hundred thirty-eight thousand, eight hundred sixty-five".