289215 has 12 divisors (see below), whose sum is σ = 501384. Its totient is φ = 154224.

The previous prime is 289213. The next prime is 289241. The reversal of 289215 is 512982.

It is not a de Polignac number, because 289215 - 2¹ = 289213 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 16.

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 289215.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3169 + ... + 3258.

It is an arithmetic number, because the mean of its divisors is an integer number (41782).

2²⁸⁹²¹⁵ is an apocalyptic number.

289215 is a deficient number, since it is larger than the sum of its proper divisors (212169).

289215 is a wasteful number, since it uses less digits than its factorization.

289215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6438 (or 6435 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 289215 is about 537.7871326092. The cubic root of 289215 is about 66.1312813932.

The spelling of 289215 in words is "two hundred eighty-nine thousand, two hundred fifteen".