266210560 has 288 divisors, whose sum is σ = 827672832. Its totient is φ = 79626240.

The previous prime is 266210521. The next prime is 266210561. The reversal of 266210560 is 65012662.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266210561) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3646684 + ... + 3646756.

It is an arithmetic number, because the mean of its divisors is an integer number (2873864).

Almost surely, 2^266210560 is an apocalyptic number.

266210560 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 266210560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413836416).

266210560 is an abundant number, since it is smaller than the sum of its proper divisors (561462272).

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

266210560 is a wasteful number, since it uses less digits than its factorization.

266210560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 266210560 is about 16315.9602843351. The cubic root of 266210560 is about 643.2924085278.

The spelling of 266210560 in words is "two hundred sixty-six million, two hundred ten thousand, five hundred sixty".