28079 has 4 divisors (see below), whose sum is σ = 28776. Its totient is φ = 27384.

The previous prime is 28069. The next prime is 28081. The reversal of 28079 is 97082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97082 = 2 ⋅48541.

It is a cyclic number.

It is not a de Polignac number, because 28079 - 2⁸ = 27823 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284 + ... + 369.

It is an arithmetic number, because the mean of its divisors is an integer number (7194).

2²⁸⁰⁷⁹ is an apocalyptic number.

28079 is a deficient number, since it is larger than the sum of its proper divisors (697).

28079 is an equidigital number, since it uses as much as digits as its factorization.

28079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 28079 is about 167.5678966867. The cubic root of 28079 is about 30.3944212986.

The spelling of 28079 in words is "twenty-eight thousand, seventy-nine".