28713 has 8 divisors (see below), whose sum is σ = 40608. Its totient is φ = 17984.

The previous prime is 28711. The next prime is 28723. The reversal of 28713 is 31782.

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

It is a cyclic number.

It is not a de Polignac number, because 28713 - 2¹ = 28711 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28713.

It is not an unprimeable number, because it can be changed into a prime (28711) 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, 231 + ... + 332.

It is an arithmetic number, because the mean of its divisors is an integer number (5076).

2²⁸⁷¹³ is an apocalyptic number.

It is an amenable number.

28713 is a deficient number, since it is larger than the sum of its proper divisors (11895).

28713 is a wasteful number, since it uses less digits than its factorization.

28713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583.

The product of its digits is 336, while the sum is 21.

The square root of 28713 is about 169.4491074040. The cubic root of 28713 is about 30.6214809229.

It can be divided in two parts, 287 and 13, that added together give a triangular number (300 = T₂₄).

The spelling of 28713 in words is "twenty-eight thousand, seven hundred thirteen".