266344 has 24 divisors (see below), whose sum is σ = 543510. Its totient is φ = 122304.

The previous prime is 266333. The next prime is 266351. The reversal of 266344 is 443662.

It can be written as a sum of positive squares in 3 ways, for example, as 213444 + 52900 = 462^2 + 230^2 .

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1254 + ... + 1450.

2²⁶⁶³⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271755).

266344 is an abundant number, since it is smaller than the sum of its proper divisors (277166).

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

266344 is a wasteful number, since it uses less digits than its factorization.

266344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 212 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 266344 is about 516.0852642733. The cubic root of 266344 is about 64.3399875590.

The spelling of 266344 in words is "two hundred sixty-six thousand, three hundred forty-four".