28032808805 has 8 divisors (see below), whose sum is σ = 34724511744. Its totient is φ = 21702819600.

The previous prime is 28032808781. The next prime is 28032808819. The reversal of 28032808805 is 50880823082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-28032808805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 90428261 + ... + 90428570.

It is an arithmetic number, because the mean of its divisors is an integer number (4340563968).

Almost surely, 2^28032808805 is an apocalyptic number.

It is an amenable number.

28032808805 is a deficient number, since it is larger than the sum of its proper divisors (6691702939).

28032808805 is a wasteful number, since it uses less digits than its factorization.

28032808805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180856867.

The product of its (nonzero) digits is 245760, while the sum is 44.

The spelling of 28032808805 in words is "twenty-eight billion, thirty-two million, eight hundred eight thousand, eight hundred five".