256236 has 24 divisors (see below), whose sum is σ = 606144. Its totient is φ = 84240.

The previous prime is 256219. The next prime is 256279. The reversal of 256236 is 632652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491 + ... + 1653.

It is an arithmetic number, because the mean of its divisors is an integer number (25256).

2²⁵⁶²³⁶ is an apocalyptic number.

It is an amenable number.

256236 is an abundant number, since it is smaller than the sum of its proper divisors (349908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256236 is a wasteful number, since it uses less digits than its factorization.

256236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 299 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 256236 is about 506.1975898797. The cubic root of 256236 is about 63.5155478906.

Adding to 256236 its reverse (632652), we get a palindrome (888888).

The spelling of 256236 in words is "two hundred fifty-six thousand, two hundred thirty-six".