28383 has 4 divisors (see below), whose sum is σ = 37848. Its totient is φ = 18920.

The previous prime is 28351. The next prime is 28387. The reversal of 28383 is 38382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28383 - 2⁵ = 28351 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28387) 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, 4728 + ... + 4733.

It is an arithmetic number, because the mean of its divisors is an integer number (9462).

2²⁸³⁸³ is an apocalyptic number.

28383 is a deficient number, since it is larger than the sum of its proper divisors (9465).

28383 is an equidigital number, since it uses as much as digits as its factorization.

28383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9464.

The product of its digits is 1152, while the sum is 24.

The square root of 28383 is about 168.4725496928. The cubic root of 28383 is about 30.5037171856.

Subtracting 28383 from its reverse (38382), we obtain a palindrome (9999).

It can be divided in two parts, 2 and 8383, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 28383 in words is "twenty-eight thousand, three hundred eighty-three".