28068 has 12 divisors (see below), whose sum is σ = 65520. Its totient is φ = 9352.

The previous prime is 28057. The next prime is 28069. The reversal of 28068 is 86082.

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

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 7.

It is a nialpdrome in base 8 and base 13.

It is a zygodrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (28069) by changing a digit.

28068 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, 1158 + ... + 1181.

It is an arithmetic number, because the mean of its divisors is an integer number (5460).

2²⁸⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

28068 is an abundant number, since it is smaller than the sum of its proper divisors (37452).

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 (32760).

28068 is a wasteful number, since it uses less digits than its factorization.

28068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346 (or 2344 counting only the distinct ones).

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

The square root of 28068 is about 167.5350709553. The cubic root of 28068 is about 30.3904517566.

The spelling of 28068 in words is "twenty-eight thousand, sixty-eight".