266288064 has 112 divisors (see below), whose sum is σ = 809548800. Its totient is φ = 75672576.

The previous prime is 266287993. The next prime is 266288081. The reversal of 266288064 is 460882662.

266288064 is digitally balanced in base 3, 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 (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320802 + ... + 321630.

Almost surely, 2^266288064 is an apocalyptic number.

266288064 is a gapful number since it is divisible by the number (24) 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 266288064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404774400).

266288064 is an abundant number, since it is smaller than the sum of its proper divisors (543260736).

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

266288064 is a wasteful number, since it uses less digits than its factorization.

266288064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 266288064 is about 16318.3352092056. The cubic root of 266288064 is about 643.3548314173.

The spelling of 266288064 in words is "two hundred sixty-six million, two hundred eighty-eight thousand, sixty-four".