3728530730 has 16 divisors (see below), whose sum is σ = 6730374024. Its totient is φ = 1487185920.

The previous prime is 3728530723. The next prime is 3728530829. The reversal of 3728530730 is 370358273.

It can be written as a sum of positive squares in 4 ways, for example, as 2801267329 + 927263401 = 52927^2 + 30451^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524591 + ... + 531650.

Almost surely, 2^3728530730 is an apocalyptic number.

3728530730 is a deficient number, since it is larger than the sum of its proper divisors (3001843294).

3728530730 is a wasteful number, since it uses less digits than its factorization.

3728530730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056601.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 3728530730 is about 61061.6960950152. The cubic root of 3728530730 is about 1550.6456872826.

The spelling of 3728530730 in words is "three billion, seven hundred twenty-eight million, five hundred thirty thousand, seven hundred thirty".