28384 has 12 divisors (see below), whose sum is σ = 55944. Its totient is φ = 14176.

The previous prime is 28351. The next prime is 28387. The reversal of 28384 is 48382.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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

28384 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412 + ... + 475.

It is an arithmetic number, because the mean of its divisors is an integer number (4662).

2²⁸³⁸⁴ is an apocalyptic number.

It is an amenable number.

28384 is a deficient number, since it is larger than the sum of its proper divisors (27560).

28384 is an equidigital number, since it uses as much as digits as its factorization.

28384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 889 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 28384 is about 168.4755175092. The cubic root of 28384 is about 30.5040754207.

The spelling of 28384 in words is "twenty-eight thousand, three hundred eighty-four".