289304 has 24 divisors (see below), whose sum is σ = 574860. Its totient is φ = 136416.

The previous prime is 289297. The next prime is 289309. The reversal of 289304 is 403982.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289309) by changing a digit.

289304 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 5 ways as a sum of consecutive naturals, for example, 6707 + ... + 6749.

2²⁸⁹³⁰⁴ is an apocalyptic number.

It is an amenable number.

289304 is a deficient number, since it is larger than the sum of its proper divisors (285556).

289304 is a wasteful number, since it uses less digits than its factorization.

289304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 289304 is about 537.8698727388. The cubic root of 289304 is about 66.1380642138.

The spelling of 289304 in words is "two hundred eighty-nine thousand, three hundred four".