28102083291 has 12 divisors (see below), whose sum is σ = 42979657032. Its totient is φ = 17632679616.

The previous prime is 28102083281. The next prime is 28102083299. The reversal of 28102083291 is 19238020182.

It is not a de Polignac number, because 28102083291 - 2³⁰ = 27028341467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28102083299) 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, 91836721 + ... + 91837026.

It is an arithmetic number, because the mean of its divisors is an integer number (3581638086).

Almost surely, 2^28102083291 is an apocalyptic number.

28102083291 is a deficient number, since it is larger than the sum of its proper divisors (14877573741).

28102083291 is a wasteful number, since it uses less digits than its factorization.

28102083291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183673770 (or 183673767 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 28102083291 in words is "twenty-eight billion, one hundred two million, eighty-three thousand, two hundred ninety-one".