730345 has 24 divisors (see below), whose sum is σ = 1116288. Its totient is φ = 453600.

The previous prime is 730339. The next prime is 730363. The reversal of 730345 is 543037.

730345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 730345 - 2⁷ = 730217 is a prime.

It is a Duffinian number.

730345 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2560 + ... + 2830.

It is an arithmetic number, because the mean of its divisors is an integer number (46512).

2⁷³⁰³⁴⁵ is an apocalyptic number.

It is an amenable number.

730345 is a deficient number, since it is larger than the sum of its proper divisors (385943).

730345 is a wasteful number, since it uses less digits than its factorization.

730345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 730345 is about 854.6022466622. The cubic root of 730345 is about 90.0553157891.

The spelling of 730345 in words is "seven hundred thirty thousand, three hundred forty-five".