289840328 has 16 divisors (see below), whose sum is σ = 560981760. Its totient is φ = 140245200.

The previous prime is 289840279. The next prime is 289840349. The reversal of 289840328 is 823048982.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584108 + ... + 584603.

It is an arithmetic number, because the mean of its divisors is an integer number (35061360).

Almost surely, 2^289840328 is an apocalyptic number.

It is an amenable number.

289840328 is a deficient number, since it is larger than the sum of its proper divisors (271141432).

289840328 is a wasteful number, since it uses less digits than its factorization.

289840328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168748 (or 1168744 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 289840328 is about 17024.6975890910. The cubic root of 289840328 is about 661.7890913640.

The spelling of 289840328 in words is "two hundred eighty-nine million, eight hundred forty thousand, three hundred twenty-eight".