266883720 has 64 divisors (see below), whose sum is σ = 835470720. Its totient is φ = 68073984.

The previous prime is 266883703. The next prime is 266883737. The reversal of 266883720 is 27388662.

It is an interprime number because it is at equal distance from previous prime (266883703) and next prime (266883737).

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, 45589 + ... + 51108.

It is an arithmetic number, because the mean of its divisors is an integer number (13054230).

Almost surely, 2^266883720 is an apocalyptic number.

266883720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266883720 is an abundant number, since it is smaller than the sum of its proper divisors (568587000).

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

266883720 is a wasteful number, since it uses less digits than its factorization.

266883720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96734 (or 96730 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 266883720 is about 16336.5761406728. The cubic root of 266883720 is about 643.8341779513.

The spelling of 266883720 in words is "two hundred sixty-six million, eight hundred eighty-three thousand, seven hundred twenty".