28168079 has 2 divisors, whose sum is σ = 28168080. Its totient is φ = 28168078.

The previous prime is 28168067. The next prime is 28168081. The reversal of 28168079 is 97086182.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28168079 is a prime.

Together with 28168081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28168009) 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 as a sum of consecutive naturals, namely, 14084039 + 14084040.

It is an arithmetic number, because the mean of its divisors is an integer number (14084040).

Almost surely, 2^28168079 is an apocalyptic number.

28168079 is a deficient number, since it is larger than the sum of its proper divisors (1).

28168079 is an equidigital number, since it uses as much as digits as its factorization.

28168079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 28168079 is about 5307.3608319013. The cubic root of 28168079 is about 304.2652888261.

The spelling of 28168079 in words is "twenty-eight million, one hundred sixty-eight thousand, seventy-nine".