28682368805 has 8 divisors (see below), whose sum is σ = 36443480472. Its totient is φ = 21596136448.

The previous prime is 28682368801. The next prime is 28682368807. The reversal of 28682368805 is 50886328682.

It can be written as a sum of positive squares in 4 ways, for example, as 4837758916 + 23844609889 = 69554^2 + 154417^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28682368805 - 2² = 28682368801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28682368801) 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 7 ways as a sum of consecutive naturals, for example, 168719732 + ... + 168719901.

It is an arithmetic number, because the mean of its divisors is an integer number (4555435059).

Almost surely, 2^28682368805 is an apocalyptic number.

It is an amenable number.

28682368805 is a deficient number, since it is larger than the sum of its proper divisors (7761111667).

28682368805 is a wasteful number, since it uses less digits than its factorization.

28682368805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337439655.

The product of its (nonzero) digits is 8847360, while the sum is 56.

The spelling of 28682368805 in words is "twenty-eight billion, six hundred eighty-two million, three hundred sixty-eight thousand, eight hundred five".