729323 has 8 divisors (see below), whose sum is σ = 853248. Its totient is φ = 610344.

The previous prime is 729301. The next prime is 729329. The reversal of 729323 is 323927.

729323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 729323 - 2¹⁴ = 712939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 729292 and 729301.

It is not an unprimeable number, because it can be changed into a prime (729329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911 + ... + 1512.

It is an arithmetic number, because the mean of its divisors is an integer number (106656).

2⁷²⁹³²³ is an apocalyptic number.

729323 is a deficient number, since it is larger than the sum of its proper divisors (123925).

729323 is a wasteful number, since it uses less digits than its factorization.

729323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473.

The product of its digits is 2268, while the sum is 26.

The square root of 729323 is about 854.0040983508. The cubic root of 729323 is about 90.0132902184.

The spelling of 729323 in words is "seven hundred twenty-nine thousand, three hundred twenty-three".