28733 has 4 divisors (see below), whose sum is σ = 29280. Its totient is φ = 28188.

The previous prime is 28729. The next prime is 28751. The reversal of 28733 is 33782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28733 - 2² = 28729 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 8³ + 7³ + 3 + 3⁹ .

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28699 and 28708.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28733.

It is not an unprimeable number, because it can be changed into a prime (28703) 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, 185 + ... + 302.

It is an arithmetic number, because the mean of its divisors is an integer number (7320).

2²⁸⁷³³ is an apocalyptic number.

It is an amenable number.

28733 is a deficient number, since it is larger than the sum of its proper divisors (547).

28733 is an equidigital number, since it uses as much as digits as its factorization.

28733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its digits is 1008, while the sum is 23.

The square root of 28733 is about 169.5081119003. The cubic root of 28733 is about 30.6285890560.

The spelling of 28733 in words is "twenty-eight thousand, seven hundred thirty-three".