28079339 has 4 divisors (see below), whose sum is σ = 28555320. Its totient is φ = 27603360.

The previous prime is 28079333. The next prime is 28079341. The reversal of 28079339 is 93397082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28079339 - 2¹⁶ = 28013803 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28079296 and 28079305.

It is not an unprimeable number, because it can be changed into a prime (28079333) 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, 237902 + ... + 238019.

It is an arithmetic number, because the mean of its divisors is an integer number (7138830).

Almost surely, 2^28079339 is an apocalyptic number.

28079339 is a deficient number, since it is larger than the sum of its proper divisors (475981).

28079339 is an equidigital number, since it uses as much as digits as its factorization.

28079339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475980.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 28079339 is about 5298.9941498364. The cubic root of 28079339 is about 303.9454361616.

The spelling of 28079339 in words is "twenty-eight million, seventy-nine thousand, three hundred thirty-nine".