228246289 has 4 divisors (see below), whose sum is σ = 228695220. Its totient is φ = 227797360.

The previous prime is 228246257. The next prime is 228246313. The reversal of 228246289 is 982642822.

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 182115025 + 46131264 = 13495^2 + 6792^2 .

It is a cyclic number.

It is not a de Polignac number, because 228246289 - 2⁵ = 228246257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228246209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223702 + ... + 224719.

It is an arithmetic number, because the mean of its divisors is an integer number (57173805).

Almost surely, 2^228246289 is an apocalyptic number.

It is an amenable number.

228246289 is a deficient number, since it is larger than the sum of its proper divisors (448931).

228246289 is an equidigital number, since it uses as much as digits as its factorization.

228246289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448930.

The product of its digits is 221184, while the sum is 43.

The square root of 228246289 is about 15107.8221130645. The cubic root of 228246289 is about 611.1313671657.

The spelling of 228246289 in words is "two hundred twenty-eight million, two hundred forty-six thousand, two hundred eighty-nine".