28782662308 has 12 divisors (see below), whose sum is σ = 50840404272. Its totient is φ = 14256832520.

The previous prime is 28782662291. The next prime is 28782662309. The reversal of 28782662308 is 80326628782.

It is not an unprimeable number, because it can be changed into a prime (28782662309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33624178 + ... + 33625033.

It is an arithmetic number, because the mean of its divisors is an integer number (4236700356).

Almost surely, 2^28782662308 is an apocalyptic number.

It is an amenable number.

28782662308 is a deficient number, since it is larger than the sum of its proper divisors (22057741964).

28782662308 is a wasteful number, since it uses less digits than its factorization.

28782662308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67249322 (or 67249320 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 28782662308 in words is "twenty-eight billion, seven hundred eighty-two million, six hundred sixty-two thousand, three hundred eight".