28767 has 8 divisors (see below), whose sum is σ = 39424. Its totient is φ = 18648.

The previous prime is 28759. The next prime is 28771. The reversal of 28767 is 76782.

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

It is not a de Polignac number, because 28767 - 2³ = 28759 is a prime.

It is a Duffinian number.

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 28767.

It is not an unprimeable number, because it can be changed into a prime (28867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18 + ... + 240.

It is an arithmetic number, because the mean of its divisors is an integer number (4928).

2²⁸⁷⁶⁷ is an apocalyptic number.

28767 is a deficient number, since it is larger than the sum of its proper divisors (10657).

28767 is a wasteful number, since it uses less digits than its factorization.

28767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its digits is 4704, while the sum is 30.

The square root of 28767 is about 169.6083724349. The cubic root of 28767 is about 30.6406653161.

The spelling of 28767 in words is "twenty-eight thousand, seven hundred sixty-seven".