28330 has 8 divisors (see below), whose sum is σ = 51012. Its totient is φ = 11328.

The previous prime is 28319. The next prime is 28349. The reversal of 28330 is 3382.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27889 + 441 = 167^2 + 21^2 .

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

It is a plaindrome in base 12.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407 + ... + 1426.

2²⁸³³⁰ is an apocalyptic number.

28330 is a deficient number, since it is larger than the sum of its proper divisors (22682).

28330 is a wasteful number, since it uses less digits than its factorization.

28330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 28330 is about 168.3151805394. The cubic root of 28330 is about 30.4847186730.

It can be divided in two parts, 283 and 30, that added together give a palindrome (313).

The spelling of 28330 in words is "twenty-eight thousand, three hundred thirty".