289245 has 16 divisors (see below), whose sum is σ = 505152. Its totient is φ = 140160.

The previous prime is 289243. The next prime is 289249. The reversal of 289245 is 542982.

It is not a de Polignac number, because 289245 - 2¹ = 289243 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712 + ... + 1041.

It is an arithmetic number, because the mean of its divisors is an integer number (31572).

2²⁸⁹²⁴⁵ is an apocalyptic number.

It is an amenable number.

289245 is a deficient number, since it is larger than the sum of its proper divisors (215907).

289245 is a wasteful number, since it uses less digits than its factorization.

289245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772.

The product of its digits is 5760, while the sum is 30.

The square root of 289245 is about 537.8150239627. The cubic root of 289245 is about 66.1335678927.

The spelling of 289245 in words is "two hundred eighty-nine thousand, two hundred forty-five".