266143332 has 96 divisors (see below), whose sum is σ = 768144384. Its totient is φ = 69840000.

The previous prime is 266143309. The next prime is 266143349. The reversal of 266143332 is 233341662.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 266143332.

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, 273607 + ... + 274577.

It is an arithmetic number, because the mean of its divisors is an integer number (8001504).

Almost surely, 2^266143332 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 266143332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384072192).

266143332 is an abundant number, since it is smaller than the sum of its proper divisors (502001052).

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

266143332 is a wasteful number, since it uses less digits than its factorization.

266143332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1247 counting only the distinct ones).

The product of its digits is 15552, while the sum is 30.

The square root of 266143332 is about 16313.8999629151. The cubic root of 266143332 is about 643.2382522701.

Adding to 266143332 its reverse (233341662), we get a palindrome (499484994).

The spelling of 266143332 in words is "two hundred sixty-six million, one hundred forty-three thousand, three hundred thirty-two".