289212 has 48 divisors (see below), whose sum is σ = 844032. Its totient is φ = 74880.

The previous prime is 289193. The next prime is 289213. The reversal of 289212 is 212982.

289212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 16.

It is a zygodrome in base 5.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289212.

It is not an unprimeable number, because it can be changed into a prime (289213) by changing a digit.

289212 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, 768 + ... + 1080.

It is an arithmetic number, because the mean of its divisors is an integer number (17584).

2²⁸⁹²¹² is an apocalyptic number.

289212 is a gapful number since it is divisible by the number (22) 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 289212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422016).

289212 is an abundant number, since it is smaller than the sum of its proper divisors (554820).

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

289212 is a wasteful number, since it uses less digits than its factorization.

289212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 336 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 289212 is about 537.7843433943. The cubic root of 289212 is about 66.1310527345.

The spelling of 289212 in words is "two hundred eighty-nine thousand, two hundred twelve".