28866659316 has 48 divisors (see below), whose sum is σ = 73492671168. Its totient is φ = 8745817600.

The previous prime is 28866659309. The next prime is 28866659317. The reversal of 28866659316 is 61395666882.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28866659316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866659317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803596 + ... + 838748.

It is an arithmetic number, because the mean of its divisors is an integer number (1531097316).

Almost surely, 2^28866659316 is an apocalyptic number.

It is an amenable number.

28866659316 is an abundant number, since it is smaller than the sum of its proper divisors (44626011852).

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

28866659316 is a wasteful number, since it uses less digits than its factorization.

28866659316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41392 (or 41390 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 60.

The spelling of 28866659316 in words is "twenty-eight billion, eight hundred sixty-six million, six hundred fifty-nine thousand, three hundred sixteen".