730189 has 4 divisors (see below), whose sum is σ = 768640. Its totient is φ = 691740.

The previous prime is 730187. The next prime is 730199. The reversal of 730189 is 981037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 730189 - 2¹ = 730187 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730187) 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, 19197 + ... + 19234.

It is an arithmetic number, because the mean of its divisors is an integer number (192160).

2⁷³⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

730189 is a deficient number, since it is larger than the sum of its proper divisors (38451).

730189 is a wasteful number, since it uses less digits than its factorization.

730189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38450.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 730189 is about 854.5109712578. The cubic root of 730189 is about 90.0489034636.

It can be divided in two parts, 730 and 189, that added together give a palindrome (919).

The spelling of 730189 in words is "seven hundred thirty thousand, one hundred eighty-nine".