266631120 has 120 divisors (see below), whose sum is σ = 1023374976. Its totient is φ = 60943104.

The previous prime is 266631107. The next prime is 266631121. The reversal of 266631120 is 21136662.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266631121) 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 23 ways as a sum of consecutive naturals, for example, 21412 + ... + 31491.

Almost surely, 2^266631120 is an apocalyptic number.

266631120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266631120 is an abundant number, since it is smaller than the sum of its proper divisors (756743856).

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

266631120 is a wasteful number, since it uses less digits than its factorization.

266631120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52929 (or 52920 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 266631120 is about 16328.8431923391. The cubic root of 266631120 is about 643.6309885251.

Adding to 266631120 its reverse (21136662), we get a palindrome (287767782).

The spelling of 266631120 in words is "two hundred sixty-six million, six hundred thirty-one thousand, one hundred twenty".