266120 has 16 divisors (see below), whose sum is σ = 598860. Its totient is φ = 106432.

The previous prime is 266117. The next prime is 266129. The reversal of 266120 is 21662.

It can be written as a sum of positive squares in 2 ways, for example, as 228484 + 37636 = 478^2 + 194^2 .

It is not an unprimeable number, because it can be changed into a prime (266129) by changing a digit.

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, 3287 + ... + 3366.

2²⁶⁶¹²⁰ is an apocalyptic number.

266120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266120 is an abundant number, since it is smaller than the sum of its proper divisors (332740).

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

266120 is a wasteful number, since it uses less digits than its factorization.

266120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6664 (or 6660 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 266120 is about 515.8682002217. The cubic root of 266120 is about 64.3219454788.

Adding to 266120 its reverse (21662), we get a palindrome (287782).

The spelling of 266120 in words is "two hundred sixty-six thousand, one hundred twenty".