266255872 has 20 divisors (see below), whose sum is σ = 531992736. Its totient is φ = 133127680.

The previous prime is 266255863. The next prime is 266255879. The reversal of 266255872 is 278552662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266255879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259504 + ... + 260527.

Almost surely, 2^266255872 is an apocalyptic number.

It is an amenable number.

266255872 is a deficient number, since it is larger than the sum of its proper divisors (265736864).

266255872 is an frugal number, since it uses more digits than its factorization.

266255872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520049 (or 520033 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The square root of 266255872 is about 16317.3488042635. The cubic root of 266255872 is about 643.3289049662.

The spelling of 266255872 in words is "two hundred sixty-six million, two hundred fifty-five thousand, eight hundred seventy-two".