266888260 has 24 divisors (see below), whose sum is σ = 561176280. Its totient is φ = 106619904.

The previous prime is 266888257. The next prime is 266888261. The reversal of 266888260 is 62888662.

It can be written as a sum of positive squares in 4 ways, for example, as 40144896 + 226743364 = 6336^2 + 15058^2 .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 266888260.

It is not an unprimeable number, because it can be changed into a prime (266888261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8532 + ... + 24628.

It is an arithmetic number, because the mean of its divisors is an integer number (23382345).

Almost surely, 2^266888260 is an apocalyptic number.

266888260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266888260 is an abundant number, since it is smaller than the sum of its proper divisors (294288020).

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

266888260 is a wasteful number, since it uses less digits than its factorization.

266888260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16935 (or 16933 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 266888260 is about 16336.7150920863. The cubic root of 266888260 is about 643.8378287180.

The spelling of 266888260 in words is "two hundred sixty-six million, eight hundred eighty-eight thousand, two hundred sixty".