266236 has 12 divisors (see below), whose sum is σ = 471240. Its totient is φ = 131600.

The previous prime is 266221. The next prime is 266239. The reversal of 266236 is 632662.

266236 = T₁₆ + T₁₇ + ... + T₁₁₆.

266236 is nontrivially palindromic in base 13.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 266236.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266236.

It is not an unprimeable number, because it can be changed into a prime (266239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (39270).

2²⁶⁶²³⁶ is an apocalyptic number.

It is an amenable number.

266236 is a deficient number, since it is larger than the sum of its proper divisors (205004).

266236 is a wasteful number, since it uses less digits than its factorization.

266236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 762 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 266236 is about 515.9806197911. The cubic root of 266236 is about 64.3312899623.

Adding to 266236 its reverse (632662), we get a palindrome (898898).

The spelling of 266236 in words is "two hundred sixty-six thousand, two hundred thirty-six".