238018 has 16 divisors (see below), whose sum is σ = 403200. Its totient is φ = 104400.

The previous prime is 238009. The next prime is 238019. The reversal of 238018 is 810832.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a self number, because there is not a number n which added to its sum of digits gives 238018.

It is not an unprimeable number, because it can be changed into a prime (238019) 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, 508 + ... + 856.

It is an arithmetic number, because the mean of its divisors is an integer number (25200).

2²³⁸⁰¹⁸ is an apocalyptic number.

238018 is a deficient number, since it is larger than the sum of its proper divisors (165182).

238018 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (238017) it forms an eRAP, since the sums of their prime factors are consecutive (392 and 393).

238018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 238018 is about 487.8708845586. The cubic root of 238018 is about 61.9731066159.

The spelling of 238018 in words is "two hundred thirty-eight thousand, eighteen".