28587317316 has 24 divisors (see below), whose sum is σ = 66894878400. Its totient is φ = 9501800352.

The previous prime is 28587317309. The next prime is 28587317371. The reversal of 28587317316 is 61371378582.

It is a super-2 number, since 2×28587317316² (a number of 22 digits) contains 22 as substring.

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, 3408816 + ... + 3417191.

It is an arithmetic number, because the mean of its divisors is an integer number (2787286600).

Almost surely, 2^28587317316 is an apocalyptic number.

It is an amenable number.

28587317316 is an abundant number, since it is smaller than the sum of its proper divisors (38307561084).

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

28587317316 is a wasteful number, since it uses less digits than its factorization.

28587317316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6826363 (or 6826361 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The spelling of 28587317316 in words is "twenty-eight billion, five hundred eighty-seven million, three hundred seventeen thousand, three hundred sixteen".