289072816 has 20 divisors (see below), whose sum is σ = 561307824. Its totient is φ = 144219200.

The previous prime is 289072757. The next prime is 289072843. The reversal of 289072816 is 618270982.

289072816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 12220 + ... + 26971.

Almost surely, 2^289072816 is an apocalyptic number.

It is an amenable number.

289072816 is a deficient number, since it is larger than the sum of its proper divisors (272235008).

289072816 is a wasteful number, since it uses less digits than its factorization.

289072816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39660 (or 39654 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 289072816 is about 17002.1415121743. The cubic root of 289072816 is about 661.2044245398.

The spelling of 289072816 in words is "two hundred eighty-nine million, seventy-two thousand, eight hundred sixteen".