729536 has 14 divisors (see below), whose sum is σ = 1447800. Its totient is φ = 364736.

The previous prime is 729527. The next prime is 729551. The reversal of 729536 is 635927.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a d-powerful number, because it can be written as 7⁶ + 2⁷ + 5⁷ + 9⁶ + 3⁷ + 6 .

It is a congruent number.

It is an unprimeable number.

729536 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5636 + ... + 5763.

2⁷²⁹⁵³⁶ is an apocalyptic number.

It is an amenable number.

729536 is a deficient number, since it is larger than the sum of its proper divisors (718264).

729536 is a wasteful number, since it uses less digits than its factorization.

729536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11411 (or 11401 counting only the distinct ones).

The product of its digits is 11340, while the sum is 32.

The square root of 729536 is about 854.1287959084. The cubic root of 729536 is about 90.0220522094.

The spelling of 729536 in words is "seven hundred twenty-nine thousand, five hundred thirty-six".