28993365168 has 160 divisors (see below), whose sum is σ = 79066606080. Its totient is φ = 9142917120.

The previous prime is 28993365151. The next prime is 28993365169. The reversal of 28993365168 is 86156339982.

It is not an unprimeable number, because it can be changed into a prime (28993365169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31965771 + ... + 31966677.

It is an arithmetic number, because the mean of its divisors is an integer number (494166288).

Almost surely, 2^28993365168 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 28993365168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39533303040).

28993365168 is an abundant number, since it is smaller than the sum of its proper divisors (50073240912).

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

28993365168 is a wasteful number, since it uses less digits than its factorization.

28993365168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435 (or 1429 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 60.

The spelling of 28993365168 in words is "twenty-eight billion, nine hundred ninety-three million, three hundred sixty-five thousand, one hundred sixty-eight".