266343320 has 64 divisors (see below), whose sum is σ = 621388800. Its totient is φ = 102637440.

The previous prime is 266343283. The next prime is 266343323. The reversal of 266343320 is 23343662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266343323) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 429971 + ... + 430589.

It is an arithmetic number, because the mean of its divisors is an integer number (9709200).

Almost surely, 2^266343320 is an apocalyptic number.

266343320 is a gapful number since it is divisible by the number (20) 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 266343320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310694400).

266343320 is an abundant number, since it is smaller than the sum of its proper divisors (355045480).

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

266343320 is a wasteful number, since it uses less digits than its factorization.

266343320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

The square root of 266343320 is about 16320.0281862502. The cubic root of 266343320 is about 643.3993280368.

Adding to 266343320 its reverse (23343662), we get a palindrome (289686982).

The spelling of 266343320 in words is "two hundred sixty-six million, three hundred forty-three thousand, three hundred twenty".