266438716 has 12 divisors (see below), whose sum is σ = 486540432. Its totient is φ = 127427168.

The previous prime is 266438687. The next prime is 266438717. The reversal of 266438716 is 617834662.

266438716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266438717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1447945 + ... + 1448128.

It is an arithmetic number, because the mean of its divisors is an integer number (40545036).

Almost surely, 2^266438716 is an apocalyptic number.

It is an amenable number.

266438716 is a deficient number, since it is larger than the sum of its proper divisors (220101716).

266438716 is a wasteful number, since it uses less digits than its factorization.

266438716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896100 (or 2896098 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 266438716 is about 16322.9505911156. The cubic root of 266438716 is about 643.4761341629.

The spelling of 266438716 in words is "two hundred sixty-six million, four hundred thirty-eight thousand, seven hundred sixteen".