13240566 has 24 divisors (see below), whose sum is σ = 29231280. Its totient is φ = 4329936.

The previous prime is 13240553. The next prime is 13240573. The reversal of 13240566 is 66504231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5986 + ... + 7893.

It is an arithmetic number, because the mean of its divisors is an integer number (1217970).

Almost surely, 2^13240566 is an apocalyptic number.

13240566 is an abundant number, since it is smaller than the sum of its proper divisors (15990714).

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

13240566 is a wasteful number, since it uses less digits than its factorization.

13240566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13940 (or 13937 counting only the distinct ones).

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

The square root of 13240566 is about 3638.7588543348. The cubic root of 13240566 is about 236.5750007587.

Adding to 13240566 its reverse (66504231), we get a palindrome (79744797).

The spelling of 13240566 in words is "thirteen million, two hundred forty thousand, five hundred sixty-six".