289140168 has 32 divisors (see below), whose sum is σ = 724600800. Its totient is φ = 96146688.

The previous prime is 289140133. The next prime is 289140169. The reversal of 289140168 is 861041982.

It is not an unprimeable number, because it can be changed into a prime (289140169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4321 + ... + 24432.

It is an arithmetic number, because the mean of its divisors is an integer number (22643775).

Almost surely, 2^289140168 is an apocalyptic number.

It is an amenable number.

289140168 is an abundant number, since it is smaller than the sum of its proper divisors (435460632).

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

289140168 is a wasteful number, since it uses less digits than its factorization.

289140168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29181 (or 29177 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 289140168 is about 17004.1220884820. The cubic root of 289140168 is about 661.2557725967.

The spelling of 289140168 in words is "two hundred eighty-nine million, one hundred forty thousand, one hundred sixty-eight".