289230 has 32 divisors (see below), whose sum is σ = 718848. Its totient is φ = 74400.

The previous prime is 289213. The next prime is 289241. The reversal of 289230 is 32982.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 289230.

It is a congruent number.

It is an unprimeable number.

289230 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775 + ... + 1085.

It is an arithmetic number, because the mean of its divisors is an integer number (22464).

2²⁸⁹²³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359424).

289230 is an abundant number, since it is smaller than the sum of its proper divisors (429618).

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

289230 is a wasteful number, since it uses less digits than its factorization.

289230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 289230 is about 537.8010784668. The cubic root of 289230 is about 66.1324246627.

The spelling of 289230 in words is "two hundred eighty-nine thousand, two hundred thirty".