13540266 has 24 divisors (see below), whose sum is σ = 29452644. Its totient is φ = 4495680.

The previous prime is 13540253. The next prime is 13540283. The reversal of 13540266 is 66204531.

It can be written as a sum of positive squares in 2 ways, for example, as 12809241 + 731025 = 3579^2 + 855^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3720 + ... + 6396.

Almost surely, 2^13540266 is an apocalyptic number.

13540266 is an abundant number, since it is smaller than the sum of its proper divisors (15912378).

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

13540266 is a wasteful number, since it uses less digits than its factorization.

13540266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966 (or 2963 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 13540266 is about 3679.7100429246. The cubic root of 13540266 is about 238.3466572281.

Adding to 13540266 its reverse (66204531), we get a palindrome (79744797).

It can be divided in two parts, 135 and 40266, that added together give a square (40401 = 201²).

The spelling of 13540266 in words is "thirteen million, five hundred forty thousand, two hundred sixty-six".