289460220 has 96 divisors (see below), whose sum is σ = 933520896. Its totient is φ = 65644800.

The previous prime is 289460203. The next prime is 289460239. The reversal of 289460220 is 22064982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52390 + ... + 57650.

It is an arithmetic number, because the mean of its divisors is an integer number (9724176).

Almost surely, 2^289460220 is an apocalyptic number.

289460220 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 289460220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466760448).

289460220 is an abundant number, since it is smaller than the sum of its proper divisors (644060676).

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

289460220 is a wasteful number, since it uses less digits than its factorization.

289460220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5411 (or 5409 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 289460220 is about 17013.5304978126. The cubic root of 289460220 is about 661.4996660626.

The spelling of 289460220 in words is "two hundred eighty-nine million, four hundred sixty thousand, two hundred twenty".