28289577215 has 8 divisors (see below), whose sum is σ = 34412527248. Its totient is φ = 22321638720.

The previous prime is 28289577203. The next prime is 28289577289. The reversal of 28289577215 is 51277598282.

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

It is not a de Polignac number, because 28289577215 - 2²⁴ = 28272799999 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, 38752481 + ... + 38753210.

It is an arithmetic number, because the mean of its divisors is an integer number (4301565906).

Almost surely, 2^28289577215 is an apocalyptic number.

28289577215 is a deficient number, since it is larger than the sum of its proper divisors (6122950033).

28289577215 is an equidigital number, since it uses as much as digits as its factorization.

28289577215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77505769.

The product of its digits is 5644800, while the sum is 56.

The spelling of 28289577215 in words is "twenty-eight billion, two hundred eighty-nine million, five hundred seventy-seven thousand, two hundred fifteen".