266788480 has 256 divisors, whose sum is σ = 803727360. Its totient is φ = 82575360.

The previous prime is 266788453. The next prime is 266788493. The reversal of 266788480 is 84887662.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2360904 + ... + 2361016.

It is an arithmetic number, because the mean of its divisors is an integer number (3139560).

Almost surely, 2^266788480 is an apocalyptic number.

266788480 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 266788480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401863680).

266788480 is an abundant number, since it is smaller than the sum of its proper divisors (536938880).

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

266788480 is a wasteful number, since it uses less digits than its factorization.

266788480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 49.

The square root of 266788480 is about 16333.6609490953. The cubic root of 266788480 is about 643.7575827177.

The spelling of 266788480 in words is "two hundred sixty-six million, seven hundred eighty-eight thousand, four hundred eighty".