729032 has 8 divisors (see below), whose sum is σ = 1366950. Its totient is φ = 364512.

The previous prime is 729023. The next prime is 729037. The reversal of 729032 is 230927.

It can be written as a sum of positive squares in only one way, i.e., 630436 + 98596 = 794^2 + 314^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 728989 and 729007.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 729032.

It is not an unprimeable number, because it can be changed into a prime (729037) 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 as a sum of consecutive naturals, namely, 45557 + ... + 45572.

729032 is a Friedman number, since it can be written as 90^3+2^(7-2), using all its digits and the basic arithmetic operations.

2⁷²⁹⁰³² is an apocalyptic number.

It is an amenable number.

729032 is a deficient number, since it is larger than the sum of its proper divisors (637918).

729032 is a wasteful number, since it uses less digits than its factorization.

729032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91135 (or 91131 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 729032 is about 853.8337074630. The cubic root of 729032 is about 90.0013168532.

Adding to 729032 its reverse (230927), we get a palindrome (959959).

The spelling of 729032 in words is "seven hundred twenty-nine thousand, thirty-two".