266806938 has 16 divisors (see below), whose sum is σ = 534273696. Its totient is φ = 88825680.

The previous prime is 266806927. The next prime is 266806973. The reversal of 266806938 is 839608662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22156 + ... + 32007.

It is an arithmetic number, because the mean of its divisors is an integer number (33392106).

Almost surely, 2^266806938 is an apocalyptic number.

266806938 is an abundant number, since it is smaller than the sum of its proper divisors (267466758).

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

266806938 is a wasteful number, since it uses less digits than its factorization.

266806938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54989.

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 266806938 is about 16334.2259688055. The cubic root of 266806938 is about 643.7724286904.

The spelling of 266806938 in words is "two hundred sixty-six million, eight hundred six thousand, nine hundred thirty-eight".