28080340168 has 32 divisors (see below), whose sum is σ = 54678223800. Its totient is φ = 13503250432.

The previous prime is 28080340159. The next prime is 28080340187. The reversal of 28080340168 is 86104308082.

It can be written as a sum of positive squares in 4 ways, for example, as 25388598244 + 2691741924 = 159338^2 + 51882^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28080340168.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175855 + ... + 295102.

Almost surely, 2^28080340168 is an apocalyptic number.

It is an amenable number.

28080340168 is a deficient number, since it is larger than the sum of its proper divisors (26597883632).

28080340168 is a wasteful number, since it uses less digits than its factorization.

28080340168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471249 (or 471245 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 28080340168 in words is "twenty-eight billion, eighty million, three hundred forty thousand, one hundred sixty-eight".