13240407 has 8 divisors (see below), whose sum is σ = 17987184. Its totient is φ = 8660288.

The previous prime is 13240391. The next prime is 13240421. The reversal of 13240407 is 70404231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13240407 - 2⁴ = 13240391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13240457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41478 + ... + 41795.

It is an arithmetic number, because the mean of its divisors is an integer number (2248398).

Almost surely, 2^13240407 is an apocalyptic number.

13240407 is a deficient number, since it is larger than the sum of its proper divisors (4746777).

13240407 is an equidigital number, since it uses as much as digits as its factorization.

13240407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83329.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 13240407 is about 3638.7370061602. The cubic root of 13240407 is about 236.5740537807.

Adding to 13240407 its reverse (70404231), we get a palindrome (83644638).

The spelling of 13240407 in words is "thirteen million, two hundred forty thousand, four hundred seven".