266872384 has 56 divisors (see below), whose sum is σ = 558378360. Its totient is φ = 126357504.

The previous prime is 266872369. The next prime is 266872387. The reversal of 266872384 is 483278662.

It can be written as a sum of positive squares in 4 ways, for example, as 151782400 + 115089984 = 12320^2 + 10728^2 .

It is not an unprimeable number, because it can be changed into a prime (266872387) 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, 97012 + ... + 99724.

Almost surely, 2^266872384 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 266872384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279189180).

266872384 is an abundant number, since it is smaller than the sum of its proper divisors (291505976).

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

266872384 is a wasteful number, since it uses less digits than its factorization.

266872384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807 (or 2797 counting only the distinct ones).

The product of its digits is 774144, while the sum is 46.

The square root of 266872384 is about 16336.2291854638. The cubic root of 266872384 is about 643.8250621117.

The spelling of 266872384 in words is "two hundred sixty-six million, eight hundred seventy-two thousand, three hundred eighty-four".