289238368 has 24 divisors (see below), whose sum is σ = 599409720. Its totient is φ = 137007360.

The previous prime is 289238297. The next prime is 289238399. The reversal of 289238368 is 863832982.

It is a congruent number.

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, 237253 + ... + 238468.

It is an arithmetic number, because the mean of its divisors is an integer number (24975405).

Almost surely, 2^289238368 is an apocalyptic number.

It is an amenable number.

289238368 is an abundant number, since it is smaller than the sum of its proper divisors (310171352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289238368 is a wasteful number, since it uses less digits than its factorization.

289238368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475750 (or 475742 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The square root of 289238368 is about 17007.0093784886. The cubic root of 289238368 is about 661.3306243747.

The spelling of 289238368 in words is "two hundred eighty-nine million, two hundred thirty-eight thousand, three hundred sixty-eight".