266338228 has 12 divisors (see below), whose sum is σ = 501945220. Its totient is φ = 122925312.

The previous prime is 266338207. The next prime is 266338249. The reversal of 266338228 is 822833662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (266338207) and next prime (266338249).

It can be written as a sum of positive squares in 2 ways, for example, as 162868644 + 103469584 = 12762^2 + 10172^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2560893 + ... + 2560996.

Almost surely, 2^266338228 is an apocalyptic number.

It is an amenable number.

266338228 is a deficient number, since it is larger than the sum of its proper divisors (235606992).

266338228 is a wasteful number, since it uses less digits than its factorization.

266338228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121906 (or 5121904 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 266338228 is about 16319.8721808720. The cubic root of 266338228 is about 643.3952278022.

The spelling of 266338228 in words is "two hundred sixty-six million, three hundred thirty-eight thousand, two hundred twenty-eight".