266752560 has 80 divisors (see below), whose sum is σ = 847133280. Its totient is φ = 69396480.

The previous prime is 266752547. The next prime is 266752561. The reversal of 266752560 is 65257662.

266752560 is digitally balanced in base 2 and base 3, because in such bases 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 (80).

It is not an unprimeable number, because it can be changed into a prime (266752561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3715 + ... + 23394.

It is an arithmetic number, because the mean of its divisors is an integer number (10589166).

Almost surely, 2^266752560 is an apocalyptic number.

266752560 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 266752560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423566640).

266752560 is an abundant number, since it is smaller than the sum of its proper divisors (580380720).

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

266752560 is a wasteful number, since it uses less digits than its factorization.

266752560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27166 (or 27160 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 266752560 is about 16332.5613423002. The cubic root of 266752560 is about 643.7286899032.

The spelling of 266752560 in words is "two hundred sixty-six million, seven hundred fifty-two thousand, five hundred sixty".