28117045927 has 12 divisors (see below), whose sum is σ = 28892874144. Its totient is φ = 27361333440.

The previous prime is 28117045897. The next prime is 28117045933. The reversal of 28117045927 is 72954071182.

It is a de Polignac number, because none of the positive numbers 2^k-28117045927 is a prime.

It is a super-3 number, since 3×28117045927³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28117055927) 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 11 ways as a sum of consecutive naturals, for example, 473023 + ... + 529135.

It is an arithmetic number, because the mean of its divisors is an integer number (2407739512).

Almost surely, 2^28117045927 is an apocalyptic number.

28117045927 is a deficient number, since it is larger than the sum of its proper divisors (775828217).

28117045927 is an equidigital number, since it uses as much as digits as its factorization.

28117045927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56470 (or 56427 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 28117045927 in words is "twenty-eight billion, one hundred seventeen million, forty-five thousand, nine hundred twenty-seven".