258856 has 32 divisors (see below), whose sum is σ = 554400. Its totient is φ = 112320.

The previous prime is 258847. The next prime is 258871. The reversal of 258856 is 658852.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1911 + ... + 2041.

It is an arithmetic number, because the mean of its divisors is an integer number (17325).

2²⁵⁸⁸⁵⁶ is an apocalyptic number.

258856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277200).

258856 is an abundant number, since it is smaller than the sum of its proper divisors (295544).

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

258856 is a wasteful number, since it uses less digits than its factorization.

258856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 165 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 258856 is about 508.7789303814. The cubic root of 258856 is about 63.7312952942.

The spelling of 258856 in words is "two hundred fifty-eight thousand, eight hundred fifty-six".