256832 has 14 divisors (see below), whose sum is σ = 509778. Its totient is φ = 128384.

The previous prime is 256831. The next prime is 256873. The reversal of 256832 is 238652.

256832 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 246016 + 10816 = 496^2 + 104^2 .

It is a d-powerful number, because it can be written as 2⁷ + 5⁷ + 8 + 6⁴ + 3¹¹ + 2⁷ .

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1943 + ... + 2070.

2²⁵⁶⁸³² is an apocalyptic number.

It is an amenable number.

256832 is a deficient number, since it is larger than the sum of its proper divisors (252946).

256832 is an equidigital number, since it uses as much as digits as its factorization.

256832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4025 (or 4015 counting only the distinct ones).

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

The square root of 256832 is about 506.7859508708. The cubic root of 256832 is about 63.5647550722.

The spelling of 256832 in words is "two hundred fifty-six thousand, eight hundred thirty-two".