28786828708 has 24 divisors (see below), whose sum is σ = 54989200224. Its totient is φ = 13077177600.

The previous prime is 28786828703. The next prime is 28786828711. The reversal of 28786828708 is 80782868782.

It is a self number, because there is not a number n which added to its sum of digits gives 28786828708.

It is not an unprimeable number, because it can be changed into a prime (28786828703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118098 + ... + 267433.

It is an arithmetic number, because the mean of its divisors is an integer number (2291216676).

Almost surely, 2^28786828708 is an apocalyptic number.

It is an amenable number.

28786828708 is a deficient number, since it is larger than the sum of its proper divisors (26202371516).

28786828708 is a wasteful number, since it uses less digits than its factorization.

28786828708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387243 (or 387241 counting only the distinct ones).

The product of its (nonzero) digits is 38535168, while the sum is 64.

The spelling of 28786828708 in words is "twenty-eight billion, seven hundred eighty-six million, eight hundred twenty-eight thousand, seven hundred eight".