266600240 has 20 divisors (see below), whose sum is σ = 619845744. Its totient is φ = 106640064.

The previous prime is 266600227. The next prime is 266600249. The reversal of 266600240 is 42006662.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (266600249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666172 + ... + 1666331.

Almost surely, 2^266600240 is an apocalyptic number.

266600240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266600240 is an abundant number, since it is smaller than the sum of its proper divisors (353245504).

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

266600240 is a wasteful number, since it uses less digits than its factorization.

266600240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332516 (or 3332510 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 266600240 is about 16327.8975988950. The cubic root of 266600240 is about 643.6061400975.

The spelling of 266600240 in words is "two hundred sixty-six million, six hundred thousand, two hundred forty".