266333040 has 120 divisors (see below), whose sum is σ = 907949328. Its totient is φ = 69949440.

The previous prime is 266333027. The next prime is 266333047. The reversal of 266333040 is 40333662.

266333040 is a `hidden beast` number, since 26 + 633 + 3 + 0 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 266332995 and 266333013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266333047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45480 + ... + 51000.

Almost surely, 2^266333040 is an apocalyptic number.

266333040 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 266333040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453974664).

266333040 is an abundant number, since it is smaller than the sum of its proper divisors (641616288).

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

266333040 is a wasteful number, since it uses less digits than its factorization.

266333040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5607 (or 5598 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The square root of 266333040 is about 16319.7132327746. The cubic root of 266333040 is about 643.3910502118.

The spelling of 266333040 in words is "two hundred sixty-six million, three hundred thirty-three thousand, forty".