289290 has 16 divisors (see below), whose sum is σ = 694368. Its totient is φ = 77136.

The previous prime is 289283. The next prime is 289291. The reversal of 289290 is 92982.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 9643 = 289290 / (2 + 8 + 9 + 2 + 9 + 0).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (289291) by changing a digit.

289290 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 7 ways as a sum of consecutive naturals, for example, 4792 + ... + 4851.

It is an arithmetic number, because the mean of its divisors is an integer number (43398).

2²⁸⁹²⁹⁰ is an apocalyptic number.

289290 is an abundant number, since it is smaller than the sum of its proper divisors (405078).

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

289290 is a wasteful number, since it uses less digits than its factorization.

289290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9653.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 289290 is about 537.8568582811. The cubic root of 289290 is about 66.1369973455.

The spelling of 289290 in words is "two hundred eighty-nine thousand, two hundred ninety".