28027347779 has 8 divisors (see below), whose sum is σ = 28310106000. Its totient is φ = 27745055712.

The previous prime is 28027347769. The next prime is 28027347833. The reversal of 28027347779 is 97774372082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28027347779 - 2⁴ = 28027347763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28027347749) 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 7 ways as a sum of consecutive naturals, for example, 4952 + ... + 236810.

It is an arithmetic number, because the mean of its divisors is an integer number (3538763250).

Almost surely, 2^28027347779 is an apocalyptic number.

28027347779 is a deficient number, since it is larger than the sum of its proper divisors (282758221).

28027347779 is a wasteful number, since it uses less digits than its factorization.

28027347779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233077.

The product of its (nonzero) digits is 8297856, while the sum is 56.

The spelling of 28027347779 in words is "twenty-eight billion, twenty-seven million, three hundred forty-seven thousand, seven hundred seventy-nine".