729827530 has 16 divisors (see below), whose sum is σ = 1319144904. Its totient is φ = 290718720.

The previous prime is 729827509. The next prime is 729827533. The reversal of 729827530 is 35728927.

It can be written as a sum of positive squares in 4 ways, for example, as 474499089 + 255328441 = 21783^2 + 15979^2 .

It is not an unprimeable number, because it can be changed into a prime (729827533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149007 + ... + 153826.

Almost surely, 2^729827530 is an apocalyptic number.

729827530 is a deficient number, since it is larger than the sum of its proper divisors (589317374).

729827530 is a wasteful number, since it uses less digits than its factorization.

729827530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303081.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 729827530 is about 27015.3202831282. The cubic root of 729827530 is about 900.3404185480.

The spelling of 729827530 in words is "seven hundred twenty-nine million, eight hundred twenty-seven thousand, five hundred thirty".