266371056 has 120 divisors (see below), whose sum is σ = 869512800. Its totient is φ = 76091904.

The previous prime is 266371033. The next prime is 266371093. The reversal of 266371056 is 650173662.

266371056 is a `hidden beast` number, since 2 + 6 + 637 + 10 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 266371056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46696 + ... + 52088.

It is an arithmetic number, because the mean of its divisors is an integer number (7245940).

Almost surely, 2^266371056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266371056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434756400).

266371056 is an abundant number, since it is smaller than the sum of its proper divisors (603141744).

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

266371056 is a wasteful number, since it uses less digits than its factorization.

266371056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428 (or 5405 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 266371056 is about 16320.8779175631. The cubic root of 266371056 is about 643.4216609970.

The spelling of 266371056 in words is "two hundred sixty-six million, three hundred seventy-one thousand, fifty-six".