266516772 has 48 divisors (see below), whose sum is σ = 644656320. Its totient is φ = 85629312.

The previous prime is 266516753. The next prime is 266516779. The reversal of 266516772 is 277615662.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (266516779) 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, 45643 + ... + 51149.

It is an arithmetic number, because the mean of its divisors is an integer number (13430340).

Almost surely, 2^266516772 is an apocalyptic number.

It is an amenable number.

266516772 is an abundant number, since it is smaller than the sum of its proper divisors (378139548).

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

266516772 is a wasteful number, since it uses less digits than its factorization.

266516772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660 (or 5658 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 266516772 is about 16325.3414053122. The cubic root of 266516772 is about 643.5389657086.

The spelling of 266516772 in words is "two hundred sixty-six million, five hundred sixteen thousand, seven hundred seventy-two".