28755641168 has 80 divisors (see below), whose sum is σ = 60971097600. Its totient is φ = 13079040000.

The previous prime is 28755641153. The next prime is 28755641179. The reversal of 28755641168 is 86114655782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8843543 + ... + 8846793.

It is an arithmetic number, because the mean of its divisors is an integer number (762138720).

Almost surely, 2^28755641168 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 28755641168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30485548800).

28755641168 is an abundant number, since it is smaller than the sum of its proper divisors (32215456432).

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

28755641168 is a wasteful number, since it uses less digits than its factorization.

28755641168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356 (or 4350 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 53.

The spelling of 28755641168 in words is "twenty-eight billion, seven hundred fifty-five million, six hundred forty-one thousand, one hundred sixty-eight".