28077013868 has 24 divisors (see below), whose sum is σ = 53504295600. Its totient is φ = 12841028928.

The previous prime is 28077013793. The next prime is 28077013879. The reversal of 28077013868 is 86831077082.

It is an unprimeable number.

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, 6367355 + ... + 6371762.

It is an arithmetic number, because the mean of its divisors is an integer number (2229345650).

Almost surely, 2^28077013868 is an apocalyptic number.

It is an amenable number.

28077013868 is a deficient number, since it is larger than the sum of its proper divisors (25427281732).

28077013868 is a wasteful number, since it uses less digits than its factorization.

28077013868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12739169 (or 12739167 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 28077013868 in words is "twenty-eight billion, seventy-seven million, thirteen thousand, eight hundred sixty-eight".