338138 has 4 divisors (see below), whose sum is σ = 507210. Its totient is φ = 169068.

The previous prime is 338137. The next prime is 338141. The reversal of 338138 is 831833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831833 = 499 ⋅1667.

It can be written as a sum of positive squares in only one way, i.e., 310249 + 27889 = 557^2 + 167^2 .

It is a super-2 number, since 2×338138² = 228674614088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84533 + ... + 84536.

2³³⁸¹³⁸ is an apocalyptic number.

338138 is a deficient number, since it is larger than the sum of its proper divisors (169072).

338138 is a wasteful number, since it uses less digits than its factorization.

338138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169071.

The product of its digits is 1728, while the sum is 26.

The square root of 338138 is about 581.4963456463. The cubic root of 338138 is about 69.6676764987.

The spelling of 338138 in words is "three hundred thirty-eight thousand, one hundred thirty-eight".