266111340 has 96 divisors (see below), whose sum is σ = 855671040. Its totient is φ = 61113600.

The previous prime is 266111309. The next prime is 266111383. The reversal of 266111340 is 43111662.

266111340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 266111340.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1930 + ... + 23150.

It is an arithmetic number, because the mean of its divisors is an integer number (8913240).

Almost surely, 2^266111340 is an apocalyptic number.

266111340 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 266111340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427835520).

266111340 is an abundant number, since it is smaller than the sum of its proper divisors (589559700).

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

266111340 is a wasteful number, since it uses less digits than its factorization.

266111340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21263 (or 21261 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 266111340 is about 16312.9194198954. The cubic root of 266111340 is about 643.2124775586.

The spelling of 266111340 in words is "two hundred sixty-six million, one hundred eleven thousand, three hundred forty".