728365539 has 32 divisors (see below), whose sum is σ = 1072431360. Its totient is φ = 436060800.

The previous prime is 728365529. The next prime is 728365579. The reversal of 728365539 is 935563827.

It is a happy number.

It is not a de Polignac number, because 728365539 - 2⁴ = 728365523 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (728365529) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1176372 + ... + 1176990.

It is an arithmetic number, because the mean of its divisors is an integer number (33513480).

Almost surely, 2^728365539 is an apocalyptic number.

728365539 is a deficient number, since it is larger than the sum of its proper divisors (344065821).

728365539 is a wasteful number, since it uses less digits than its factorization.

728365539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011.

The product of its digits is 1360800, while the sum is 48.

The square root of 728365539 is about 26988.2481647105. The cubic root of 728365539 is about 899.7388291565.

The spelling of 728365539 in words is "seven hundred twenty-eight million, three hundred sixty-five thousand, five hundred thirty-nine".