730389 has 8 divisors (see below), whose sum is σ = 1062432. Its totient is φ = 442640.

The previous prime is 730363. The next prime is 730397. The reversal of 730389 is 983037.

730389 = 32² + 33² + ... + 130².

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

It is not a de Polignac number, because 730389 - 2⁹ = 729877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730339) 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, 11034 + ... + 11099.

It is an arithmetic number, because the mean of its divisors is an integer number (132804).

2⁷³⁰³⁸⁹ is an apocalyptic number.

It is an amenable number.

730389 is a deficient number, since it is larger than the sum of its proper divisors (332043).

730389 is a wasteful number, since it uses less digits than its factorization.

730389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22147.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 730389 is about 854.6279892444. The cubic root of 730389 is about 90.0571242286.

The spelling of 730389 in words is "seven hundred thirty thousand, three hundred eighty-nine".