288791228 has 12 divisors (see below), whose sum is σ = 551328792. Its totient is φ = 131268720.

The previous prime is 288791227. The next prime is 288791267. The reversal of 288791228 is 822197882.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288791227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3281675 + ... + 3281762.

It is an arithmetic number, because the mean of its divisors is an integer number (45944066).

Almost surely, 2^288791228 is an apocalyptic number.

It is an amenable number.

288791228 is a deficient number, since it is larger than the sum of its proper divisors (262537564).

288791228 is a wasteful number, since it uses less digits than its factorization.

288791228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6563452 (or 6563450 counting only the distinct ones).

The product of its digits is 258048, while the sum is 47.

The square root of 288791228 is about 16993.8585377189. The cubic root of 288791228 is about 660.9896600591.

The spelling of 288791228 in words is "two hundred eighty-eight million, seven hundred ninety-one thousand, two hundred twenty-eight".