266304 has 56 divisors (see below), whose sum is σ = 751840. Its totient is φ = 82944.

The previous prime is 266297. The next prime is 266333. The reversal of 266304 is 403662.

It is an unprimeable number.

266304 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 (3) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3612 + ... + 3684.

2²⁶⁶³⁰⁴ is an apocalyptic number.

266304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375920).

266304 is an abundant number, since it is smaller than the sum of its proper divisors (485536).

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

266304 is a wasteful number, since it uses less digits than its factorization.

266304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 266304 is about 516.0465095318. The cubic root of 266304 is about 64.3367665011.

Adding to 266304 its reverse (403662), we get a palindrome (669966).

The spelling of 266304 in words is "two hundred sixty-six thousand, three hundred four".