289331880 has 64 divisors (see below), whose sum is σ = 877780800. Its totient is φ = 76285440.

The previous prime is 289331873. The next prime is 289331909. The reversal of 289331880 is 88133982.

289331880 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 15 ways as a sum of consecutive naturals, for example, 2866 + ... + 24225.

It is an arithmetic number, because the mean of its divisors is an integer number (13715325).

Almost surely, 2^289331880 is an apocalyptic number.

289331880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289331880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (438890400).

289331880 is an abundant number, since it is smaller than the sum of its proper divisors (588448920).

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

289331880 is a wasteful number, since it uses less digits than its factorization.

289331880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27194 (or 27190 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 289331880 is about 17009.7583757089. The cubic root of 289331880 is about 661.4018870341.

The spelling of 289331880 in words is "two hundred eighty-nine million, three hundred thirty-one thousand, eight hundred eighty".