13240737 has 12 divisors (see below), whose sum is σ = 19254144. Its totient is φ = 8767800.

The previous prime is 13240729. The next prime is 13240757. The reversal of 13240737 is 73704231.

It is not a de Polignac number, because 13240737 - 2³ = 13240729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13240737.

It is not an unprimeable number, because it can be changed into a prime (13240757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3513 + ... + 6230.

It is an arithmetic number, because the mean of its divisors is an integer number (1604512).

Almost surely, 2^13240737 is an apocalyptic number.

It is an amenable number.

13240737 is a deficient number, since it is larger than the sum of its proper divisors (6013407).

13240737 is a wasteful number, since it uses less digits than its factorization.

13240737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9900 (or 9897 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 13240737 is about 3638.7823512818. The cubic root of 13240737 is about 236.5760191983.

Adding to 13240737 its reverse (73704231), we get a palindrome (86944968).

The spelling of 13240737 in words is "thirteen million, two hundred forty thousand, seven hundred thirty-seven".