28320769088 has 14 divisors (see below), whose sum is σ = 56199026286. Its totient is φ = 14160384512.

The previous prime is 28320769063. The next prime is 28320769117. The reversal of 28320769088 is 88096702382.

It can be written as a sum of positive squares in only one way, i.e., 25559056384 + 2761712704 = 159872^2 + 52552^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221255945 + ... + 221256072.

Almost surely, 2^28320769088 is an apocalyptic number.

It is an amenable number.

28320769088 is a deficient number, since it is larger than the sum of its proper divisors (27878257198).

28320769088 is an equidigital number, since it uses as much as digits as its factorization.

28320769088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442512029 (or 442512019 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 28320769088 in words is "twenty-eight billion, three hundred twenty million, seven hundred sixty-nine thousand, eighty-eight".