28194 has 16 divisors (see below), whose sum is σ = 58368. Its totient is φ = 9072.

The previous prime is 28183. The next prime is 28201. The reversal of 28194 is 49182.

It is a nialpdrome in base 13.

It is an unprimeable number.

28194 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159 + ... + 285.

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

2²⁸¹⁹⁴ is an apocalyptic number.

28194 is an abundant number, since it is smaller than the sum of its proper divisors (30174).

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).

28194 is a wasteful number, since it uses less digits than its factorization.

28194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169.

The product of its digits is 576, while the sum is 24.

The square root of 28194 is about 167.9106905471. The cubic root of 28194 is about 30.4358591160.

It can be divided in two parts, 28 and 194, that added together give a palindrome (222).

The spelling of 28194 in words is "twenty-eight thousand, one hundred ninety-four".