28616352772 has 24 divisors (see below), whose sum is σ = 57281232960. Its totient is φ = 12253752480.

The previous prime is 28616352767. The next prime is 28616352797. The reversal of 28616352772 is 27725361682.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399622 + ... + 465757.

It is an arithmetic number, because the mean of its divisors is an integer number (2386718040).

Almost surely, 2^28616352772 is an apocalyptic number.

It is an amenable number.

28616352772 is an abundant number, since it is smaller than the sum of its proper divisors (28664880188).

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

28616352772 is a wasteful number, since it uses less digits than its factorization.

28616352772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866571 (or 866569 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The spelling of 28616352772 in words is "twenty-eight billion, six hundred sixteen million, three hundred fifty-two thousand, seven hundred seventy-two".