289605228 has 24 divisors (see below), whose sum is σ = 737177280. Its totient is φ = 87759120.

The previous prime is 289605209. The next prime is 289605229. The reversal of 289605228 is 822506982.

289605228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 289605228.

It is not an unprimeable number, because it can be changed into a prime (289605229) 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, 1096858 + ... + 1097121.

It is an arithmetic number, because the mean of its divisors is an integer number (30715720).

Almost surely, 2^289605228 is an apocalyptic number.

It is an amenable number.

289605228 is an abundant number, since it is smaller than the sum of its proper divisors (447572052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289605228 is a wasteful number, since it uses less digits than its factorization.

289605228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193997 (or 2193995 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 289605228 is about 17017.7915135895. The cubic root of 289605228 is about 661.6101092526.

The spelling of 289605228 in words is "two hundred eighty-nine million, six hundred five thousand, two hundred twenty-eight".