730394321 has 8 divisors (see below), whose sum is σ = 739050624. Its totient is φ = 721768320.

The previous prime is 730394293. The next prime is 730394323. The reversal of 730394321 is 123493037.

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

It is a cyclic number.

It is not a de Polignac number, because 730394321 - 2¹⁴ = 730377937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (730394323) 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, 42881 + ... + 57441.

It is an arithmetic number, because the mean of its divisors is an integer number (92381328).

Almost surely, 2^730394321 is an apocalyptic number.

It is an amenable number.

730394321 is a deficient number, since it is larger than the sum of its proper divisors (8656303).

730394321 is a wasteful number, since it uses less digits than its factorization.

730394321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15151.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 730394321 is about 27025.8084245412. The cubic root of 730394321 is about 900.5734292159.

The spelling of 730394321 in words is "seven hundred thirty million, three hundred ninety-four thousand, three hundred twenty-one".