28803864005568 has 336 divisors, whose sum is σ = 91369226317824. Its totient is φ = 8965342310400.

The previous prime is 28803864005561. The next prime is 28803864005597. The reversal of 28803864005568 is 86550046830882.

28803864005568 is a `hidden beast` number, since 2 + 8 + 8 + 0 + 3 + 8 + 64 + 0 + 0 + 5 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28803864005561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33147843 + ... + 34005693.

It is an arithmetic number, because the mean of its divisors is an integer number (271932221184).

Almost surely, 2^{28803864005568} 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 28803864005568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45684613158912).

28803864005568 is an abundant number, since it is smaller than the sum of its proper divisors (62565362312256).

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

28803864005568 is a wasteful number, since it uses less digits than its factorization.

28803864005568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858022 (or 858000 counting only the distinct ones).

The product of its (nonzero) digits is 88473600, while the sum is 63.

The spelling of 28803864005568 in words is "twenty-eight trillion, eight hundred three billion, eight hundred sixty-four million, five thousand, five hundred sixty-eight".