729538 has 16 divisors (see below), whose sum is σ = 1188000. Its totient is φ = 334656.

The previous prime is 729527. The next prime is 729551. The reversal of 729538 is 835927.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a d-powerful number, because it can be written as 7⁶ + 2⁷ + 5⁷ + 9⁶ + 3⁷ + 8 .

It is an unprimeable number.

729538 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (74250).

2⁷²⁹⁵³⁸ is an apocalyptic number.

729538 is a deficient number, since it is larger than the sum of its proper divisors (458462).

729538 is a wasteful number, since it uses less digits than its factorization.

729538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561.

The product of its digits is 15120, while the sum is 34.

The square root of 729538 is about 854.1299666913. The cubic root of 729538 is about 90.0221344735.

The spelling of 729538 in words is "seven hundred twenty-nine thousand, five hundred thirty-eight".