28289577216 has 72 divisors (see below), whose sum is σ = 77326514944. Its totient is φ = 9174988800.

The previous prime is 28289577203. The next prime is 28289577289. The reversal of 28289577216 is 61277598282.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469360 + ... + 526191.

Almost surely, 2^28289577216 is an apocalyptic number.

It is an amenable number.

28289577216 is an abundant number, since it is smaller than the sum of its proper divisors (49036937728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28289577216 is an equidigital number, since it uses as much as digits as its factorization.

28289577216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995607 (or 995593 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 57.

The spelling of 28289577216 in words is "twenty-eight billion, two hundred eighty-nine million, five hundred seventy-seven thousand, two hundred sixteen".