28316 has 6 divisors (see below), whose sum is σ = 49560. Its totient is φ = 14156.

The previous prime is 28309. The next prime is 28319. The reversal of 28316 is 61382.

It is a plaindrome in base 12.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3536 + ... + 3543.

It is an arithmetic number, because the mean of its divisors is an integer number (8260).

2²⁸³¹⁶ is an apocalyptic number.

It is an amenable number.

28316 is a deficient number, since it is larger than the sum of its proper divisors (21244).

28316 is a wasteful number, since it uses less digits than its factorization.

28316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083 (or 7081 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 28316 is about 168.2735867568. The cubic root of 28316 is about 30.4796962423.

Adding to 28316 its reverse (61382), we get a palindrome (89698).

The spelling of 28316 in words is "twenty-eight thousand, three hundred sixteen".