266242216 has 16 divisors (see below), whose sum is σ = 509826240. Its totient is φ = 130288560.

The previous prime is 266242213. The next prime is 266242217. The reversal of 266242216 is 612242662.

It is not an unprimeable number, because it can be changed into a prime (266242213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353670 + ... + 354421.

It is an arithmetic number, because the mean of its divisors is an integer number (31864140).

Almost surely, 2^266242216 is an apocalyptic number.

It is an amenable number.

266242216 is a deficient number, since it is larger than the sum of its proper divisors (243584024).

266242216 is a wasteful number, since it uses less digits than its factorization.

266242216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708144 (or 708140 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 266242216 is about 16316.9303485674. The cubic root of 266242216 is about 643.3179062107.

Adding to 266242216 its reverse (612242662), we get a palindrome (878484878).

The spelling of 266242216 in words is "two hundred sixty-six million, two hundred forty-two thousand, two hundred sixteen".