256238 has 4 divisors (see below), whose sum is σ = 384360. Its totient is φ = 128118.

The previous prime is 256219. The next prime is 256279. The reversal of 256238 is 832652.

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

It is a congruent number.

It is an unprimeable number.

256238 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, 64058 + ... + 64061.

It is an arithmetic number, because the mean of its divisors is an integer number (96090).

2²⁵⁶²³⁸ is an apocalyptic number.

256238 is a deficient number, since it is larger than the sum of its proper divisors (128122).

256238 is a wasteful number, since it uses less digits than its factorization.

256238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128121.

The product of its digits is 2880, while the sum is 26.

The square root of 256238 is about 506.1995653890. The cubic root of 256238 is about 63.5157131429.

It can be divided in two parts, 256 and 238, that added together give a palindrome (494).

The spelling of 256238 in words is "two hundred fifty-six thousand, two hundred thirty-eight".