28860969386388 has 24 divisors (see below), whose sum is σ = 68612870618208. Its totient is φ = 9438807597856.

The previous prime is 28860969386339. The next prime is 28860969386407. The reversal of 28860969386388 is 88368396906882.

It is a self number, because there is not a number n which added to its sum of digits gives 28860969386388.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22689440706 + ... + 22689441977.

It is an arithmetic number, because the mean of its divisors is an integer number (2858869609092).

Almost surely, 2^{28860969386388} is an apocalyptic number.

It is an amenable number.

28860969386388 is an abundant number, since it is smaller than the sum of its proper divisors (39751901231820).

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

28860969386388 is a wasteful number, since it uses less digits than its factorization.

28860969386388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45378882743 (or 45378882741 counting only the distinct ones).

The product of its (nonzero) digits is 10319560704, while the sum is 84.

The spelling of 28860969386388 in words is "twenty-eight trillion, eight hundred sixty billion, nine hundred sixty-nine million, three hundred eighty-six thousand, three hundred eighty-eight".