28632108812 has 6 divisors (see below), whose sum is σ = 50106190428. Its totient is φ = 14316054404.

The previous prime is 28632108811. The next prime is 28632108829. The reversal of 28632108812 is 21880123682.

It is a self number, because there is not a number n which added to its sum of digits gives 28632108812.

It is not an unprimeable number, because it can be changed into a prime (28632108811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3579013598 + ... + 3579013605.

It is an arithmetic number, because the mean of its divisors is an integer number (8351031738).

Almost surely, 2^28632108812 is an apocalyptic number.

It is an amenable number.

28632108812 is a deficient number, since it is larger than the sum of its proper divisors (21474081616).

28632108812 is a wasteful number, since it uses less digits than its factorization.

28632108812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7158027207 (or 7158027205 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 28632108812 in words is "twenty-eight billion, six hundred thirty-two million, one hundred eight thousand, eight hundred twelve".