289980928 has 40 divisors (see below), whose sum is σ = 581673708. Its totient is φ = 144420864.

The previous prime is 289980919. The next prime is 289980953. The reversal of 289980928 is 829089982.

289980928 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 252428544 + 37552384 = 15888^2 + 6128^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149050 + ... + 150982.

Almost surely, 2^289980928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289980928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290836854).

289980928 is an abundant number, since it is smaller than the sum of its proper divisors (291692780).

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

289980928 is an equidigital number, since it uses as much as digits as its factorization.

289980928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244 (or 2228 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 55.

The square root of 289980928 is about 17028.8263835180. The cubic root of 289980928 is about 661.8960841870.

The spelling of 289980928 in words is "two hundred eighty-nine million, nine hundred eighty thousand, nine hundred twenty-eight".