258285588 has 48 divisors (see below), whose sum is σ = 663634944. Its totient is φ = 77532640.

The previous prime is 258285557. The next prime is 258285593. The reversal of 258285588 is 885582852.

It is a super-2 number, since 2×258285588² = 133422889937011488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 258285588.

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 15 ways as a sum of consecutive naturals, for example, 4981 + ... + 23267.

It is an arithmetic number, because the mean of its divisors is an integer number (13825728).

Almost surely, 2^258285588 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258285588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331817472).

258285588 is an abundant number, since it is smaller than the sum of its proper divisors (405349356).

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

258285588 is a wasteful number, since it uses less digits than its factorization.

258285588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18412 (or 18410 counting only the distinct ones).

The product of its digits is 2048000, while the sum is 51.

The square root of 258285588 is about 16071.2659115578. The cubic root of 258285588 is about 636.8444835900.

The spelling of 258285588 in words is "two hundred fifty-eight million, two hundred eighty-five thousand, five hundred eighty-eight".