13240535 has 48 divisors (see below), whose sum is σ = 21422880. Its totient is φ = 7768320.

The previous prime is 13240531. The next prime is 13240537. The reversal of 13240535 is 53504231.

It is not a de Polignac number, because 13240535 - 2² = 13240531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13240535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13240531) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 778847 + ... + 778863.

It is an arithmetic number, because the mean of its divisors is an integer number (446310).

Almost surely, 2^13240535 is an apocalyptic number.

13240535 is a deficient number, since it is larger than the sum of its proper divisors (8182345).

13240535 is an equidigital number, since it uses as much as digits as its factorization.

13240535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 13240535 is about 3638.7545946381. The cubic root of 13240535 is about 236.5748161284.

Adding to 13240535 its reverse (53504231), we get a palindrome (66744766).

The spelling of 13240535 in words is "thirteen million, two hundred forty thousand, five hundred thirty-five".