258105858 has 64 divisors (see below), whose sum is σ = 560770560. Its totient is φ = 79011072.

The previous prime is 258105857. The next prime is 258105863. The reversal of 258105858 is 858501852.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (258105851) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 302160 + ... + 303012.

It is an arithmetic number, because the mean of its divisors is an integer number (8762040).

Almost surely, 2^258105858 is an apocalyptic number.

258105858 is an abundant number, since it is smaller than the sum of its proper divisors (302664702).

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

258105858 is a wasteful number, since it uses less digits than its factorization.

258105858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 128000, while the sum is 42.

The square root of 258105858 is about 16065.6732818765. The cubic root of 258105858 is about 636.6967316133.

The spelling of 258105858 in words is "two hundred fifty-eight million, one hundred five thousand, eight hundred fifty-eight".