28016339 has 4 divisors (see below), whose sum is σ = 30171456. Its totient is φ = 25861224.

The previous prime is 28016333. The next prime is 28016377. The reversal of 28016339 is 93361082.

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 28016339 - 2⁸ = 28016083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28016333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1077539 + ... + 1077564.

It is an arithmetic number, because the mean of its divisors is an integer number (7542864).

Almost surely, 2^28016339 is an apocalyptic number.

28016339 is a deficient number, since it is larger than the sum of its proper divisors (2155117).

28016339 is a wasteful number, since it uses less digits than its factorization.

28016339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155116.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 28016339 is about 5293.0462873472. The cubic root of 28016339 is about 303.7179509729.

The spelling of 28016339 in words is "twenty-eight million, sixteen thousand, three hundred thirty-nine".