266433856 has 56 divisors (see below), whose sum is σ = 571463424. Its totient is φ = 122519040.

The previous prime is 266433851. The next prime is 266433857. The reversal of 266433856 is 658334662.

266433856 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 (266433851) 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, 358221 + ... + 358963.

It is an arithmetic number, because the mean of its divisors is an integer number (10204704).

Almost surely, 2^266433856 is an apocalyptic number.

266433856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266433856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285731712).

266433856 is an abundant number, since it is smaller than the sum of its proper divisors (305029568).

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

266433856 is a wasteful number, since it uses less digits than its factorization.

266433856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199 (or 1189 counting only the distinct ones).

The product of its digits is 622080, while the sum is 43.

The square root of 266433856 is about 16322.8017202930. The cubic root of 266433856 is about 643.4722216772.

It can be divided in two parts, 266433 and 856, that added together give a square (267289 = 517²).

The spelling of 266433856 in words is "two hundred sixty-six million, four hundred thirty-three thousand, eight hundred fifty-six".