28764847072 has 24 divisors (see below), whose sum is σ = 60987008376. Its totient is φ = 13276083072.

The previous prime is 28764847049. The next prime is 28764847123. The reversal of 28764847072 is 27074846782.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 34572718 + ... + 34573549.

It is an arithmetic number, because the mean of its divisors is an integer number (2541125349).

Almost surely, 2^28764847072 is an apocalyptic number.

It is an amenable number.

28764847072 is an abundant number, since it is smaller than the sum of its proper divisors (32222161304).

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

28764847072 is a wasteful number, since it uses less digits than its factorization.

28764847072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69146290 (or 69146282 counting only the distinct ones).

The product of its (nonzero) digits is 8429568, while the sum is 55.

The spelling of 28764847072 in words is "twenty-eight billion, seven hundred sixty-four million, eight hundred forty-seven thousand, seventy-two".