730045 has 4 divisors (see below), whose sum is σ = 876060. Its totient is φ = 584032.

The previous prime is 730033. The next prime is 730049. The reversal of 730045 is 540037.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 285156 + 444889 = 534^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 730045 - 2¹¹ = 727997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73000 + ... + 73009.

It is an arithmetic number, because the mean of its divisors is an integer number (219015).

2⁷³⁰⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

730045 is a deficient number, since it is larger than the sum of its proper divisors (146015).

730045 is a wasteful number, since it uses less digits than its factorization.

730045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146014.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 730045 is about 854.4267083840. The cubic root of 730045 is about 90.0429835832.

The spelling of 730045 in words is "seven hundred thirty thousand, forty-five".