729430 has 32 divisors (see below), whose sum is σ = 1467648. Its totient is φ = 259200.

The previous prime is 729413. The next prime is 729451. The reversal of 729430 is 34927.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 = 729395 and 729404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3940 + ... + 4120.

It is an arithmetic number, because the mean of its divisors is an integer number (45864).

2⁷²⁹⁴³⁰ is an apocalyptic number.

729430 is an abundant number, since it is smaller than the sum of its proper divisors (738218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

729430 is a wasteful number, since it uses less digits than its factorization.

729430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 729430 is about 854.0667421227. The cubic root of 729430 is about 90.0176919952.

The spelling of 729430 in words is "seven hundred twenty-nine thousand, four hundred thirty".