28869705315 has 80 divisors (see below), whose sum is σ = 56531645280. Its totient is φ = 13978759680.

The previous prime is 28869705299. The next prime is 28869705323. The reversal of 28869705315 is 51350796882.

28869705315 is a `hidden beast` number, since 28 + 86 + 9 + 7 + 0 + 531 + 5 = 666.

It is not a de Polignac number, because 28869705315 - 2⁴ = 28869705299 is a prime.

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 79 ways as a sum of consecutive naturals, for example, 3689287 + ... + 3697103.

It is an arithmetic number, because the mean of its divisors is an integer number (706645566).

Almost surely, 2^28869705315 is an apocalyptic number.

28869705315 is a deficient number, since it is larger than the sum of its proper divisors (27661939965).

28869705315 is a wasteful number, since it uses less digits than its factorization.

28869705315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8674 (or 8665 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 28869705315 in words is "twenty-eight billion, eight hundred sixty-nine million, seven hundred five thousand, three hundred fifteen".