238791 has 16 divisors (see below), whose sum is σ = 370944. Its totient is φ = 133824.

The previous prime is 238789. The next prime is 238801. The reversal of 238791 is 197832.

It is a happy number.

It is not a de Polignac number, because 238791 - 2¹ = 238789 is a prime.

It is a super-2 number, since 2×238791² = 114042283362, which contains 22 as substring.

238791 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 238791.

It is not an unprimeable number, because it can be changed into a prime (238781) 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, 1675 + ... + 1811.

It is an arithmetic number, because the mean of its divisors is an integer number (23184).

2²³⁸⁷⁹¹ is an apocalyptic number.

238791 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

238791 is a deficient number, since it is larger than the sum of its proper divisors (132153).

238791 is a wasteful number, since it uses less digits than its factorization.

238791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230.

The product of its digits is 3024, while the sum is 30.

The square root of 238791 is about 488.6624601911. The cubic root of 238791 is about 62.0401231790.

The spelling of 238791 in words is "two hundred thirty-eight thousand, seven hundred ninety-one".