238138 has 4 divisors (see below), whose sum is σ = 357210. Its totient is φ = 119068.

The previous prime is 238109. The next prime is 238141. The reversal of 238138 is 831832.

238138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 227529 + 10609 = 477^2 + 103^2 .

It is an unprimeable number.

238138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59533 + ... + 59536.

2²³⁸¹³⁸ is an apocalyptic number.

238138 is a deficient number, since it is larger than the sum of its proper divisors (119072).

238138 is a wasteful number, since it uses less digits than its factorization.

238138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119071.

The product of its digits is 1152, while the sum is 25.

The square root of 238138 is about 487.9938524203. The cubic root of 238138 is about 61.9835197266.

The spelling of 238138 in words is "two hundred thirty-eight thousand, one hundred thirty-eight".