320189 has 8 divisors (see below), whose sum is σ = 338520. Its totient is φ = 302400.

The previous prime is 320179. The next prime is 320209. The reversal of 320189 is 981023.

It can be written as a sum of positive squares in 4 ways, for example, as 17689 + 302500 = 133^2 + 550^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679 + ... + 1859.

It is an arithmetic number, because the mean of its divisors is an integer number (42315).

2³²⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

320189 is a deficient number, since it is larger than the sum of its proper divisors (18331).

320189 is a wasteful number, since it uses less digits than its factorization.

320189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 320189 is about 565.8524542670. The cubic root of 320189 is about 68.4125012774.

The spelling of 320189 in words is "three hundred twenty thousand, one hundred eighty-nine".