28776170217 has 8 divisors (see below), whose sum is σ = 38475103680. Its totient is φ = 19130675120.

The previous prime is 28776170209. The next prime is 28776170231. The reversal of 28776170217 is 71207167782.

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 28776170217 - 2³ = 28776170209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28776170237) 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, 13358334 + ... + 13360487.

It is an arithmetic number, because the mean of its divisors is an integer number (4809387960).

Almost surely, 2^28776170217 is an apocalyptic number.

It is an amenable number.

28776170217 is a deficient number, since it is larger than the sum of its proper divisors (9698933463).

28776170217 is a wasteful number, since it uses less digits than its factorization.

28776170217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26719183.

The product of its (nonzero) digits is 460992, while the sum is 48.

The spelling of 28776170217 in words is "twenty-eight billion, seven hundred seventy-six million, one hundred seventy thousand, two hundred seventeen".