28068163684 has 72 divisors (see below), whose sum is σ = 57972976992. Its totient is φ = 11751594240.

The previous prime is 28068163681. The next prime is 28068163693. The reversal of 28068163684 is 48636186082.

It is not an unprimeable number, because it can be changed into a prime (28068163681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1643839 + ... + 1660825.

It is an arithmetic number, because the mean of its divisors is an integer number (805180236).

Almost surely, 2^28068163684 is an apocalyptic number.

It is an amenable number.

28068163684 is an abundant number, since it is smaller than the sum of its proper divisors (29904813308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28068163684 is a wasteful number, since it uses less digits than its factorization.

28068163684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17113 (or 17064 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 28068163684 in words is "twenty-eight billion, sixty-eight million, one hundred sixty-three thousand, six hundred eighty-four".