266540760 has 256 divisors, whose sum is σ = 933120000. Its totient is φ = 67617792.

The previous prime is 266540753. The next prime is 266540779. The reversal of 266540760 is 67045662.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2994796 + ... + 2994884.

It is an arithmetic number, because the mean of its divisors is an integer number (3645000).

Almost surely, 2^266540760 is an apocalyptic number.

266540760 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 266540760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466560000).

266540760 is an abundant number, since it is smaller than the sum of its proper divisors (666579240).

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

266540760 is a wasteful number, since it uses less digits than its factorization.

266540760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 266540760 is about 16326.0760747952. The cubic root of 266540760 is about 643.5582724980.

The spelling of 266540760 in words is "two hundred sixty-six million, five hundred forty thousand, seven hundred sixty".