28258 has 8 divisors (see below), whose sum is σ = 43200. Its totient is φ = 13860.

The previous prime is 28229. The next prime is 28277. The reversal of 28258 is 85282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

28258 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43 + ... + 241.

It is an arithmetic number, because the mean of its divisors is an integer number (5400).

2²⁸²⁵⁸ is an apocalyptic number.

28258 is a deficient number, since it is larger than the sum of its proper divisors (14942).

28258 is a wasteful number, since it uses less digits than its factorization.

28258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272.

The product of its digits is 1280, while the sum is 25.

The square root of 28258 is about 168.1011600198. The cubic root of 28258 is about 30.4588713756.

The spelling of 28258 in words is "twenty-eight thousand, two hundred fifty-eight".