289348220 has 48 divisors (see below), whose sum is σ = 695858688. Its totient is φ = 99001920.

The previous prime is 289348219. The next prime is 289348259. The reversal of 289348220 is 22843982.

It is a congruent number.

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, 76985 + ... + 80655.

It is an arithmetic number, because the mean of its divisors is an integer number (14497056).

Almost surely, 2^289348220 is an apocalyptic number.

289348220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289348220 is an abundant number, since it is smaller than the sum of its proper divisors (406510468).

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

289348220 is a wasteful number, since it uses less digits than its factorization.

289348220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250 (or 4248 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 289348220 is about 17010.2386814530. The cubic root of 289348220 is about 661.4143376766.

The spelling of 289348220 in words is "two hundred eighty-nine million, three hundred forty-eight thousand, two hundred twenty".