266215056 has 40 divisors (see below), whose sum is σ = 692988384. Its totient is φ = 88058880.

The previous prime is 266215049. The next prime is 266215057. The reversal of 266215056 is 650512662.

It is a happy number.

266215056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (266215057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14881 + ... + 27456.

Almost surely, 2^266215056 is an apocalyptic number.

It is an amenable number.

266215056 is an abundant number, since it is smaller than the sum of its proper divisors (426773328).

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

266215056 is a wasteful number, since it uses less digits than its factorization.

266215056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42479 (or 42473 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 266215056 is about 16316.0980629561. The cubic root of 266215056 is about 643.2960300049.

The spelling of 266215056 in words is "two hundred sixty-six million, two hundred fifteen thousand, fifty-six".