266498988 has 48 divisors (see below), whose sum is σ = 722722560. Its totient is φ = 74850624.

The previous prime is 266498927. The next prime is 266498989. The reversal of 266498988 is 889894662.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (266498989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21931 + ... + 31842.

It is an arithmetic number, because the mean of its divisors is an integer number (15056720).

Almost surely, 2^266498988 is an apocalyptic number.

266498988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

266498988 is an abundant number, since it is smaller than the sum of its proper divisors (456223572).

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

266498988 is a wasteful number, since it uses less digits than its factorization.

266498988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53846 (or 53844 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 60.

The square root of 266498988 is about 16324.7967215522. The cubic root of 266498988 is about 643.5246514731.

The spelling of 266498988 in words is "two hundred sixty-six million, four hundred ninety-eight thousand, nine hundred eighty-eight".