289268816 has 10 divisors (see below), whose sum is σ = 560458362. Its totient is φ = 144634400.

The previous prime is 289268809. The next prime is 289268827. The reversal of 289268816 is 618862982.

It can be written as a sum of positive squares in only one way, i.e., 234212416 + 55056400 = 15304^2 + 7420^2 .

It is a congruent number.

It is an unprimeable number.

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, 9039635 + ... + 9039666.

Almost surely, 2^289268816 is an apocalyptic number.

It is an amenable number.

289268816 is a deficient number, since it is larger than the sum of its proper divisors (271189546).

289268816 is a wasteful number, since it uses less digits than its factorization.

289268816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18079309 (or 18079303 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 289268816 is about 17007.9045152541. The cubic root of 289268816 is about 661.3538295583.

The spelling of 289268816 in words is "two hundred eighty-nine million, two hundred sixty-eight thousand, eight hundred sixteen".