258858 has 24 divisors (see below), whose sum is σ = 571428. Its totient is φ = 84672.

The previous prime is 258847. The next prime is 258871. The reversal of 258858 is 858852.

It can be written as a sum of positive squares in 2 ways, for example, as 227529 + 31329 = 477^2 + 177^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258858.

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 11 ways as a sum of consecutive naturals, for example, 1216 + ... + 1412.

2²⁵⁸⁸⁵⁸ is an apocalyptic number.

258858 is an abundant number, since it is smaller than the sum of its proper divisors (312570).

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

258858 is a wasteful number, since it uses less digits than its factorization.

258858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 275 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 258858 is about 508.7808958678. The cubic root of 258858 is about 63.7314594295.

The spelling of 258858 in words is "two hundred fifty-eight thousand, eight hundred fifty-eight".