8730705978 has 12 divisors (see below), whose sum is σ = 18916529658. Its totient is φ = 2910235320.

The previous prime is 8730705961. The next prime is 8730705989. The reversal of 8730705978 is 8795070378.

It can be written as a sum of positive squares in only one way, i.e., 7753330809 + 977375169 = 88053^2 + 31263^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242519593 + ... + 242519628.

Almost surely, 2^8730705978 is an apocalyptic number.

8730705978 is an abundant number, since it is smaller than the sum of its proper divisors (10185823680).

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

8730705978 is a wasteful number, since it uses less digits than its factorization.

8730705978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485039229 (or 485039226 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The square root of 8730705978 is about 93438.2468692558. The cubic root of 8730705978 is about 2059.1269415966.

The spelling of 8730705978 in words is "eight billion, seven hundred thirty million, seven hundred five thousand, nine hundred seventy-eight".