729338 has 4 divisors (see below), whose sum is σ = 1094010. Its totient is φ = 364668.

The previous prime is 729331. The next prime is 729359. The reversal of 729338 is 833927.

729338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 628849 + 100489 = 793^2 + 317^2 .

It is not an unprimeable number, because it can be changed into a prime (729331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182333 + ... + 182336.

2⁷²⁹³³⁸ is an apocalyptic number.

729338 is a deficient number, since it is larger than the sum of its proper divisors (364672).

729338 is a wasteful number, since it uses less digits than its factorization.

729338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364671.

The product of its digits is 9072, while the sum is 32.

The square root of 729338 is about 854.0128804649. The cubic root of 729338 is about 90.0139073159.

The spelling of 729338 in words is "seven hundred twenty-nine thousand, three hundred thirty-eight".