258828 has 12 divisors (see below), whose sum is σ = 603960. Its totient is φ = 86272.

The previous prime is 258827. The next prime is 258847. The reversal of 258828 is 828852.

It is a tau number, because it is divible by the number of its divisors (12).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (258827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10773 + ... + 10796.

It is an arithmetic number, because the mean of its divisors is an integer number (50330).

2²⁵⁸⁸²⁸ is an apocalyptic number.

It is an amenable number.

258828 is an abundant number, since it is smaller than the sum of its proper divisors (345132).

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

258828 is a wasteful number, since it uses less digits than its factorization.

258828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21576 (or 21574 counting only the distinct ones).

The product of its digits is 10240, while the sum is 33.

The square root of 258828 is about 508.7514127745. The cubic root of 258828 is about 63.7289973105.

The spelling of 258828 in words is "two hundred fifty-eight thousand, eight hundred twenty-eight".