28679 has 8 divisors (see below), whose sum is σ = 34848. Its totient is φ = 23040.

The previous prime is 28669. The next prime is 28687. The reversal of 28679 is 97682.

28679 = T₈₇ + T₈₈ + ... + T₉₃.

28679 is nontrivially palindromic in base 2, base 8 and base 16.

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 28679 - 2⁴ = 28663 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28619) 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, 2 + ... + 239.

It is an arithmetic number, because the mean of its divisors is an integer number (4356).

2²⁸⁶⁷⁹ is an apocalyptic number.

28679 is a deficient number, since it is larger than the sum of its proper divisors (6169).

28679 is a wasteful number, since it uses less digits than its factorization.

28679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265.

The product of its digits is 6048, while the sum is 32.

The square root of 28679 is about 169.3487525788. The cubic root of 28679 is about 30.6093895175.

It can be divided in two parts, 28 and 679, that added together give a palindrome (707).

The spelling of 28679 in words is "twenty-eight thousand, six hundred seventy-nine".