8728730073 has 32 divisors (see below), whose sum is σ = 14805995520. Its totient is φ = 4978668240.

The previous prime is 8728730071. The next prime is 8728730081. The reversal of 8728730073 is 3700378278.

It is not a de Polignac number, because 8728730073 - 2¹ = 8728730071 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8728730071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61168 + ... + 145598.

It is an arithmetic number, because the mean of its divisors is an integer number (462687360).

Almost surely, 2^8728730073 is an apocalyptic number.

It is an amenable number.

8728730073 is a deficient number, since it is larger than the sum of its proper divisors (6077265447).

8728730073 is a wasteful number, since it uses less digits than its factorization.

8728730073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84994 (or 84988 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 8728730073 is about 93427.6729507912. The cubic root of 8728730073 is about 2058.9715915710.

The spelling of 8728730073 in words is "eight billion, seven hundred twenty-eight million, seven hundred thirty thousand, seventy-three".