256158 has 48 divisors (see below), whose sum is σ = 673920. Its totient is φ = 68688.

The previous prime is 256147. The next prime is 256163. The reversal of 256158 is 851652.

256158 is nontrivially palindromic in base 5.

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 23 ways as a sum of consecutive naturals, for example, 2341 + ... + 2447.

It is an arithmetic number, because the mean of its divisors is an integer number (14040).

2²⁵⁶¹⁵⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336960).

256158 is an abundant number, since it is smaller than the sum of its proper divisors (417762).

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

256158 is a wasteful number, since it uses less digits than its factorization.

256158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 138 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 256158 is about 506.1205390023. The cubic root of 256158 is about 63.5091023800.

It can be divided in two parts, 256 and 158, that added together give a palindrome (414).

The spelling of 256158 in words is "two hundred fifty-six thousand, one hundred fifty-eight".