28382 has 8 divisors (see below), whose sum is σ = 44496. Its totient is φ = 13552.

The previous prime is 28351. The next prime is 28387.

28382 is nontrivially palindromic in base 10.

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

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28387) by changing a digit.

28382 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263 + ... + 354.

It is an arithmetic number, because the mean of its divisors is an integer number (5562).

2²⁸³⁸² is an apocalyptic number.

28382 is a deficient number, since it is larger than the sum of its proper divisors (16114).

28382 is a wasteful number, since it uses less digits than its factorization.

28382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642.

The product of its digits is 768, while the sum is 23.

The square root of 28382 is about 168.4695818241. The cubic root of 28382 is about 30.5033589421.

The spelling of 28382 in words is "twenty-eight thousand, three hundred eighty-two".