266340436 has 12 divisors (see below), whose sum is σ = 468097812. Its totient is φ = 132598208.

The previous prime is 266340407. The next prime is 266340509. The reversal of 266340436 is 634043662.

It can be written as a sum of positive squares in 2 ways, for example, as 21104836 + 245235600 = 4594^2 + 15660^2 .

It is a congruent number.

It is an unprimeable number.

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, 141955 + ... + 143818.

It is an arithmetic number, because the mean of its divisors is an integer number (39008151).

Almost surely, 2^266340436 is an apocalyptic number.

It is an amenable number.

266340436 is a deficient number, since it is larger than the sum of its proper divisors (201757376).

266340436 is a wasteful number, since it uses less digits than its factorization.

266340436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286010 (or 286008 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 266340436 is about 16319.9398283204. The cubic root of 266340436 is about 643.3970057579.

The spelling of 266340436 in words is "two hundred sixty-six million, three hundred forty thousand, four hundred thirty-six".