266244480 has 192 divisors, whose sum is σ = 973814400. Its totient is φ = 66797568.

The previous prime is 266244469. The next prime is 266244487. The reversal of 266244480 is 84442662.

It is a happy number.

266244480 is a `hidden beast` number, since 26 + 624 + 4 + 4 + 8 + 0 = 666.

266244480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×266244480² = 141772246260940800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266244487) 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, 96561 + ... + 99279.

It is an arithmetic number, because the mean of its divisors is an integer number (5071950).

Almost surely, 2^266244480 is an apocalyptic number.

266244480 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 266244480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486907200).

266244480 is an abundant number, since it is smaller than the sum of its proper divisors (707569920).

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

266244480 is a wasteful number, since it uses less digits than its factorization.

266244480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761 (or 2746 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 266244480 is about 16316.9997242140. Note that the first 3 decimals coincide. The cubic root of 266244480 is about 643.3197296976.

The spelling of 266244480 in words is "two hundred sixty-six million, two hundred forty-four thousand, four hundred eighty".