288266 has 8 divisors (see below), whose sum is σ = 471744. Its totient is φ = 131020.

The previous prime is 288257. The next prime is 288283. The reversal of 288266 is 662882.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2² + 8² + 2¹³ + 8² + 6 + 6⁷ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

288266 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 3 ways as a sum of consecutive naturals, for example, 6530 + ... + 6573.

It is an arithmetic number, because the mean of its divisors is an integer number (58968).

2²⁸⁸²⁶⁶ is an apocalyptic number.

288266 is a deficient number, since it is larger than the sum of its proper divisors (183478).

288266 is a wasteful number, since it uses less digits than its factorization.

288266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13116.

The product of its digits is 9216, while the sum is 32.

The square root of 288266 is about 536.9040882690. The cubic root of 288266 is about 66.0588700330.

The spelling of 288266 in words is "two hundred eighty-eight thousand, two hundred sixty-six".