266803120 has 40 divisors (see below), whose sum is σ = 621170064. Its totient is φ = 106574592.

The previous prime is 266803099. The next prime is 266803129. The reversal of 266803120 is 21308662.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (266803129) 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 7 ways as a sum of consecutive naturals, for example, 70722 + ... + 74398.

Almost surely, 2^266803120 is an apocalyptic number.

266803120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266803120 is an abundant number, since it is smaller than the sum of its proper divisors (354366944).

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

266803120 is a wasteful number, since it uses less digits than its factorization.

266803120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4597 (or 4591 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 266803120 is about 16334.1090972235. The cubic root of 266803120 is about 643.7693578871.

The spelling of 266803120 in words is "two hundred sixty-six million, eight hundred three thousand, one hundred twenty".