266620224 has 112 divisors (see below), whose sum is σ = 780499328. Its totient is φ = 79792128.

The previous prime is 266620201. The next prime is 266620259. The reversal of 266620224 is 422026662.

It is a junction number, because it is equal to n+sod(n) for n = 266620191 and 266620200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90909 + ... + 93795.

It is an arithmetic number, because the mean of its divisors is an integer number (6968744).

Almost surely, 2^266620224 is an apocalyptic number.

266620224 is a gapful number since it is divisible by the number (24) 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 266620224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390249664).

266620224 is an abundant number, since it is smaller than the sum of its proper divisors (513879104).

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

266620224 is a wasteful number, since it uses less digits than its factorization.

266620224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 266620224 is about 16328.5095461895. The cubic root of 266620224 is about 643.6222209829.

Adding to 266620224 its reverse (422026662), we get a palindrome (688646886).

The spelling of 266620224 in words is "two hundred sixty-six million, six hundred twenty thousand, two hundred twenty-four".