8730973728 has 72 divisors (see below), whose sum is σ = 24981164208. Its totient is φ = 2892454272.

The previous prime is 8730973723. The next prime is 8730973729. The reversal of 8730973728 is 8273790378.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (8730973723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46050 + ... + 139937.

It is an arithmetic number, because the mean of its divisors is an integer number (346960614).

Almost surely, 2^8730973728 is an apocalyptic number.

It is an amenable number.

8730973728 is an abundant number, since it is smaller than the sum of its proper divisors (16250190480).

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

8730973728 is a wasteful number, since it uses less digits than its factorization.

8730973728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186166 (or 186155 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The square root of 8730973728 is about 93439.6796227384. The cubic root of 8730973728 is about 2059.1479908911.

The spelling of 8730973728 in words is "eight billion, seven hundred thirty million, nine hundred seventy-three thousand, seven hundred twenty-eight".