28079329 has 4 divisors (see below), whose sum is σ = 28100800. Its totient is φ = 28057860.

The previous prime is 28079327. The next prime is 28079333. The reversal of 28079329 is 92397082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28079329 - 2¹ = 28079327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28079291 and 28079300.

It is not an unprimeable number, because it can be changed into a prime (28079327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8637 + ... + 11434.

It is an arithmetic number, because the mean of its divisors is an integer number (7025200).

Almost surely, 2^28079329 is an apocalyptic number.

It is an amenable number.

28079329 is a deficient number, since it is larger than the sum of its proper divisors (21471).

28079329 is a wasteful number, since it uses less digits than its factorization.

28079329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21470.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 28079329 is about 5298.9932062610. The cubic root of 28079329 is about 303.9454000799.

The spelling of 28079329 in words is "twenty-eight million, seventy-nine thousand, three hundred twenty-nine".