266012320 has 96 divisors (see below), whose sum is σ = 725155200. Its totient is φ = 90326016.

The previous prime is 266012317. The next prime is 266012323. The reversal of 266012320 is 23210662.

It is a happy number.

266012320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (266012317) and next prime (266012323).

It is a junction number, because it is equal to n+sod(n) for n = 266012291 and 266012300.

It is not an unprimeable number, because it can be changed into a prime (266012323) 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, 120991 + ... + 123169.

It is an arithmetic number, because the mean of its divisors is an integer number (7553700).

Almost surely, 2^266012320 is an apocalyptic number.

266012320 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 266012320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362577600).

266012320 is an abundant number, since it is smaller than the sum of its proper divisors (459142880).

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

266012320 is a wasteful number, since it uses less digits than its factorization.

266012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310 (or 2302 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 266012320 is about 16309.8841197600. The cubic root of 266012320 is about 643.1326878975.

Adding to 266012320 its reverse (23210662), we get a palindrome (289222982).

The spelling of 266012320 in words is "two hundred sixty-six million, twelve thousand, three hundred twenty".