28388690168 has 16 divisors (see below), whose sum is σ = 53244939480. Its totient is φ = 14190039648.

The previous prime is 28388690137. The next prime is 28388690177. The reversal of 28388690168 is 86109688382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510071 + ... + 562982.

Almost surely, 2^28388690168 is an apocalyptic number.

It is an amenable number.

28388690168 is a deficient number, since it is larger than the sum of its proper divisors (24856249312).

28388690168 is a wasteful number, since it uses less digits than its factorization.

28388690168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076366 (or 1076362 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 28388690168 in words is "twenty-eight billion, three hundred eighty-eight million, six hundred ninety thousand, one hundred sixty-eight".