266131712 has 144 divisors (see below), whose sum is σ = 692278272. Its totient is φ = 99010560.

The previous prime is 266131703. The next prime is 266131717. The reversal of 266131712 is 217131662.

266131712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (266131717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453083 + ... + 453669.

It is an arithmetic number, because the mean of its divisors is an integer number (4807488).

Almost surely, 2^266131712 is an apocalyptic number.

266131712 is a gapful number since it is divisible by the number (22) 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 266131712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346139136).

266131712 is an abundant number, since it is smaller than the sum of its proper divisors (426146560).

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

266131712 is a wasteful number, since it uses less digits than its factorization.

266131712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 630 counting only the distinct ones).

The product of its digits is 3024, while the sum is 29.

The square root of 266131712 is about 16313.5438210096. The cubic root of 266131712 is about 643.2288907264.

Subtracting from 266131712 its reverse (217131662), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 266131712 in words is "two hundred sixty-six million, one hundred thirty-one thousand, seven hundred twelve".