28086 has 16 divisors (see below), whose sum is σ = 58368. Its totient is φ = 9000.

The previous prime is 28081. The next prime is 28087. The reversal of 28086 is 68082.

28086 is nontrivially palindromic in base 8.

28086 is a nontrivial repdigit in base 8.

It is a plaindrome in base 8.

It is a nialpdrome in base 8.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111 + ... + 261.

It is an arithmetic number, because the mean of its divisors is an integer number (3648).

2²⁸⁰⁸⁶ is an apocalyptic number.

28086 is an abundant number, since it is smaller than the sum of its proper divisors (30282).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29184).

28086 is a wasteful number, since it uses less digits than its factorization.

28086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 28086 is about 167.5887824408. The cubic root of 28086 is about 30.3969468310.

The spelling of 28086 in words is "twenty-eight thousand, eighty-six".