28764231332 has 24 divisors (see below), whose sum is σ = 51133420800. Its totient is φ = 14155972256.

The previous prime is 28764231329. The next prime is 28764231343. The reversal of 28764231332 is 23313246782.

It is a self number, because there is not a number n which added to its sum of digits gives 28764231332.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71732 + ... + 250347.

It is an arithmetic number, because the mean of its divisors is an integer number (2130559200).

Almost surely, 2^28764231332 is an apocalyptic number.

It is an amenable number.

28764231332 is a deficient number, since it is larger than the sum of its proper divisors (22369189468).

28764231332 is a wasteful number, since it uses less digits than its factorization.

28764231332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322435 (or 322433 counting only the distinct ones).

The product of its digits is 290304, while the sum is 41.

The spelling of 28764231332 in words is "twenty-eight billion, seven hundred sixty-four million, two hundred thirty-one thousand, three hundred thirty-two".