28288808563 has 4 divisors (see below), whose sum is σ = 28289179800. Its totient is φ = 28288437328.

The previous prime is 28288808557. The next prime is 28288808579. The reversal of 28288808563 is 36580888282.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28288808563 - 2²⁹ = 27751937651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28288808498 and 28288808507.

It is not an unprimeable number, because it can be changed into a prime (28288808593) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 24970 + ... + 239167.

It is an arithmetic number, because the mean of its divisors is an integer number (7072294950).

Almost surely, 2^28288808563 is an apocalyptic number.

28288808563 is a deficient number, since it is larger than the sum of its proper divisors (371237).

28288808563 is a wasteful number, since it uses less digits than its factorization.

28288808563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371236.

The product of its (nonzero) digits is 11796480, while the sum is 58.

The spelling of 28288808563 in words is "twenty-eight billion, two hundred eighty-eight million, eight hundred eight thousand, five hundred sixty-three".