28396 has 12 divisors (see below), whose sum is σ = 51520. Its totient is φ = 13680.

The previous prime is 28393. The next prime is 28403. The reversal of 28396 is 69382.

28396 is nontrivially palindromic in base 5.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (28393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10 + ... + 238.

2²⁸³⁹⁶ is an apocalyptic number.

It is an amenable number.

28396 is a deficient number, since it is larger than the sum of its proper divisors (23124).

28396 is a wasteful number, since it uses less digits than its factorization.

28396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 262 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 28396 is about 168.5111272290. The cubic root of 28396 is about 30.5083735855.

It can be divided in two parts, 28 and 396, that added together give a palindrome (424).

The spelling of 28396 in words is "twenty-eight thousand, three hundred ninety-six".