28866042442688 has 112 divisors (see below), whose sum is σ = 62568284271360. Its totient is φ = 13104169113600.

The previous prime is 28866042442663. The next prime is 28866042442691. The reversal of 28866042442688 is 88624424066882.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2647526645 + ... + 2647537547.

It is an arithmetic number, because the mean of its divisors is an integer number (558645395280).

Almost surely, 2^{28866042442688} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28866042442688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31284142135680).

28866042442688 is an abundant number, since it is smaller than the sum of its proper divisors (33702241828672).

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

28866042442688 is a wasteful number, since it uses less digits than its factorization.

28866042442688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15386 (or 15376 counting only the distinct ones).

The product of its (nonzero) digits is 452984832, while the sum is 68.

The spelling of 28866042442688 in words is "twenty-eight trillion, eight hundred sixty-six billion, forty-two million, four hundred forty-two thousand, six hundred eighty-eight".