8772057728 has 64 divisors (see below), whose sum is σ = 20087896320. Its totient is φ = 3737656320.

The previous prime is 8772057683. The next prime is 8772057737. The reversal of 8772057728 is 8277502778.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 8772057728.

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, 126713 + ... + 183303.

It is an arithmetic number, because the mean of its divisors is an integer number (313873380).

Almost surely, 2^8772057728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8772057728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10043948160).

8772057728 is an abundant number, since it is smaller than the sum of its proper divisors (11315838592).

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

8772057728 is a wasteful number, since it uses less digits than its factorization.

8772057728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56785 (or 56773 counting only the distinct ones).

The product of its (nonzero) digits is 3073280, while the sum is 53.

The square root of 8772057728 is about 93659.2639731917. The cubic root of 8772057728 is about 2062.3727434089.

The spelling of 8772057728 in words is "eight billion, seven hundred seventy-two million, fifty-seven thousand, seven hundred twenty-eight".