289808228 has 6 divisors (see below), whose sum is σ = 507164406. Its totient is φ = 144904112.

The previous prime is 289808227. The next prime is 289808237. The reversal of 289808228 is 822808982.

It can be written as a sum of positive squares in only one way, i.e., 239568484 + 50239744 = 15478^2 + 7088^2 .

It is not an unprimeable number, because it can be changed into a prime (289808227) 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 as a sum of consecutive naturals, namely, 36226025 + ... + 36226032.

It is an arithmetic number, because the mean of its divisors is an integer number (84527401).

Almost surely, 2^289808228 is an apocalyptic number.

It is an amenable number.

289808228 is a deficient number, since it is larger than the sum of its proper divisors (217356178).

289808228 is a wasteful number, since it uses less digits than its factorization.

289808228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72452061 (or 72452059 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 47.

The square root of 289808228 is about 17023.7548149637. The cubic root of 289808228 is about 661.7646592750.

The spelling of 289808228 in words is "two hundred eighty-nine million, eight hundred eight thousand, two hundred twenty-eight".