28533522812 has 12 divisors (see below), whose sum is σ = 49936371240. Its totient is φ = 14265988176.

The previous prime is 28533522811. The next prime is 28533522833. The reversal of 28533522812 is 21822533582.

It is a self number, because there is not a number n which added to its sum of digits gives 28533522812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28533522811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105887 + ... + 261302.

It is an arithmetic number, because the mean of its divisors is an integer number (4161364270).

Almost surely, 2^28533522812 is an apocalyptic number.

It is an amenable number.

28533522812 is a deficient number, since it is larger than the sum of its proper divisors (21402848428).

28533522812 is a wasteful number, since it uses less digits than its factorization.

28533522812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386620 (or 386618 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The spelling of 28533522812 in words is "twenty-eight billion, five hundred thirty-three million, five hundred twenty-two thousand, eight hundred twelve".