266734080 has 320 divisors, whose sum is σ = 1007614080. Its totient is φ = 66650112.

The previous prime is 266734067. The next prime is 266734087. The reversal of 266734080 is 80437662.

It is a tau number, because it is divible by the number of its divisors (320).

It is a super-2 number, since 2×266734080² = 142294138866892800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (266734087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1174927 + ... + 1175153.

It is an arithmetic number, because the mean of its divisors is an integer number (3148794).

Almost surely, 2^266734080 is an apocalyptic number.

266734080 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 266734080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503807040).

266734080 is an abundant number, since it is smaller than the sum of its proper divisors (740880000).

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

266734080 is a wasteful number, since it uses less digits than its factorization.

266734080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 266734080 is about 16331.9955914763. The cubic root of 266734080 is about 643.7138242153.

The spelling of 266734080 in words is "two hundred sixty-six million, seven hundred thirty-four thousand, eighty".