228304189 has 2 divisors, whose sum is σ = 228304190. Its totient is φ = 228304188.

The previous prime is 228304159. The next prime is 228304213. The reversal of 228304189 is 981403822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209960100 + 18344089 = 14490^2 + 4283^2 .

It is a cyclic number.

It is not a de Polignac number, because 228304189 - 2¹¹ = 228302141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228304159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114152094 + 114152095.

It is an arithmetic number, because the mean of its divisors is an integer number (114152095).

Almost surely, 2^228304189 is an apocalyptic number.

It is an amenable number.

228304189 is a deficient number, since it is larger than the sum of its proper divisors (1).

228304189 is an equidigital number, since it uses as much as digits as its factorization.

228304189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 228304189 is about 15109.7382174543. The cubic root of 228304189 is about 611.1830387098.

The spelling of 228304189 in words is "two hundred twenty-eight million, three hundred four thousand, one hundred eighty-nine".