266423056 has 20 divisors (see below), whose sum is σ = 516896604. Its totient is φ = 133030400.

The previous prime is 266423039. The next prime is 266423077. The reversal of 266423056 is 650324662.

It can be written as a sum of positive squares in 2 ways, for example, as 1254400 + 265168656 = 1120^2 + 16284^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236 + ... + 23116.

Almost surely, 2^266423056 is an apocalyptic number.

It is an amenable number.

266423056 is a deficient number, since it is larger than the sum of its proper divisors (250473548).

266423056 is a wasteful number, since it uses less digits than its factorization.

266423056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22650 (or 22644 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 266423056 is about 16322.4708913816. The cubic root of 266423056 is about 643.4635270941.

The spelling of 266423056 in words is "two hundred sixty-six million, four hundred twenty-three thousand, fifty-six".