266505226 has 24 divisors (see below), whose sum is σ = 458346924. Its totient is φ = 115764480.

The previous prime is 266505203. The next prime is 266505227. The reversal of 266505226 is 622505662.

It can be written as a sum of positive squares in 6 ways, for example, as 90916225 + 175589001 = 9535^2 + 13251^2 .

It is a super-2 number, since 2×266505226² = 142050070970622152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 266505191 and 266505200.

It is not an unprimeable number, because it can be changed into a prime (266505227) 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 11 ways as a sum of consecutive naturals, for example, 17445 + ... + 28936.

Almost surely, 2^266505226 is an apocalyptic number.

266505226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

266505226 is a deficient number, since it is larger than the sum of its proper divisors (191841698).

266505226 is a wasteful number, since it uses less digits than its factorization.

266505226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46426 (or 46413 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 266505226 is about 16324.9877794748. The cubic root of 266505226 is about 643.5296724746.

The spelling of 266505226 in words is "two hundred sixty-six million, five hundred five thousand, two hundred twenty-six".