730305 has 12 divisors (see below), whose sum is σ = 1265940. Its totient is φ = 389472.

The previous prime is 730297. The next prime is 730321. The reversal of 730305 is 503037.

It can be written as a sum of positive squares in 2 ways, for example, as 535824 + 194481 = 732^2 + 441^2 .

It is not a de Polignac number, because 730305 - 2³ = 730297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8070 + ... + 8159.

It is an arithmetic number, because the mean of its divisors is an integer number (105495).

2⁷³⁰³⁰⁵ is an apocalyptic number.

It is an amenable number.

730305 is a deficient number, since it is larger than the sum of its proper divisors (535635).

730305 is a wasteful number, since it uses less digits than its factorization.

730305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16240 (or 16237 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 18.

The square root of 730305 is about 854.5788436417. The cubic root of 730305 is about 90.0536716901.

It can be divided in two parts, 730 and 305, that added together give a triangular number (1035 = T₄₅).

The spelling of 730305 in words is "seven hundred thirty thousand, three hundred five".