266510540 has 12 divisors (see below), whose sum is σ = 559672176. Its totient is φ = 106604208.

The previous prime is 266510533. The next prime is 266510561. The reversal of 266510540 is 45015662.

266510540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6662744 + ... + 6662783.

It is an arithmetic number, because the mean of its divisors is an integer number (46639348).

Almost surely, 2^266510540 is an apocalyptic number.

266510540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266510540 is an abundant number, since it is smaller than the sum of its proper divisors (293161636).

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

266510540 is a wasteful number, since it uses less digits than its factorization.

266510540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13325536 (or 13325534 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 266510540 is about 16325.1505352937. The cubic root of 266510540 is about 643.5339496814.

The spelling of 266510540 in words is "two hundred sixty-six million, five hundred ten thousand, five hundred forty".