289920168 has 32 divisors (see below), whose sum is σ = 805334400. Its totient is φ = 96639984.

The previous prime is 289920149. The next prime is 289920173. The reversal of 289920168 is 861029982.

It is a zygodrome in base 6.

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 in 7 ways as a sum of consecutive naturals, for example, 670896 + ... + 671327.

It is an arithmetic number, because the mean of its divisors is an integer number (25166700).

Almost surely, 2^289920168 is an apocalyptic number.

It is an amenable number.

289920168 is an abundant number, since it is smaller than the sum of its proper divisors (515414232).

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

289920168 is a wasteful number, since it uses less digits than its factorization.

289920168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342238 (or 1342228 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 289920168 is about 17027.0422563638. The cubic root of 289920168 is about 661.8498517036.

The spelling of 289920168 in words is "two hundred eighty-nine million, nine hundred twenty thousand, one hundred sixty-eight".