266995080 has 192 divisors, whose sum is σ = 954270720. Its totient is φ = 64204800.

The previous prime is 266995039. The next prime is 266995093. The reversal of 266995080 is 80599662.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 756184 + ... + 756536.

It is an arithmetic number, because the mean of its divisors is an integer number (4970160).

Almost surely, 2^266995080 is an apocalyptic number.

266995080 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 266995080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477135360).

266995080 is an abundant number, since it is smaller than the sum of its proper divisors (687275640).

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

266995080 is a wasteful number, since it uses less digits than its factorization.

266995080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 266995080 is about 16339.9840881195. The cubic root of 266995080 is about 643.9237143284.

The spelling of 266995080 in words is "two hundred sixty-six million, nine hundred ninety-five thousand, eighty".