289616228 has 12 divisors (see below), whose sum is σ = 552903792. Its totient is φ = 131643720.

The previous prime is 289616213. The next prime is 289616231. The reversal of 289616228 is 822616982.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 6582187 = 289616228 / (2 + 8 + 9 + 6 + 1 + 6 + 2 + 2 + 8).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3291050 + ... + 3291137.

It is an arithmetic number, because the mean of its divisors is an integer number (46075316).

Almost surely, 2^289616228 is an apocalyptic number.

It is an amenable number.

289616228 is a deficient number, since it is larger than the sum of its proper divisors (263287564).

289616228 is a wasteful number, since it uses less digits than its factorization.

289616228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6582202 (or 6582200 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 289616228 is about 17018.1147016936. The cubic root of 289616228 is about 661.6184857347.

The spelling of 289616228 in words is "two hundred eighty-nine million, six hundred sixteen thousand, two hundred twenty-eight".