72830189 has 2 divisors, whose sum is σ = 72830190. Its totient is φ = 72830188.

The previous prime is 72830183. The next prime is 72830209. The reversal of 72830189 is 98103827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65448100 + 7382089 = 8090^2 + 2717^2 .

It is a cyclic number.

It is not a de Polignac number, because 72830189 - 2¹² = 72826093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72830183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36415094 + 36415095.

It is an arithmetic number, because the mean of its divisors is an integer number (36415095).

Almost surely, 2^72830189 is an apocalyptic number.

It is an amenable number.

72830189 is a deficient number, since it is larger than the sum of its proper divisors (1).

72830189 is an equidigital number, since it uses as much as digits as its factorization.

72830189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 72830189 is about 8534.0605224008. The cubic root of 72830189 is about 417.6096051290.

The spelling of 72830189 in words is "seventy-two million, eight hundred thirty thousand, one hundred eighty-nine".