13504407 has 16 divisors (see below), whose sum is σ = 20785152. Its totient is φ = 7639200.

The previous prime is 13504399. The next prime is 13504411. The reversal of 13504407 is 70440531.

It is not a de Polignac number, because 13504407 - 2³ = 13504399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13504487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1063 + ... + 5304.

It is an arithmetic number, because the mean of its divisors is an integer number (1299072).

Almost surely, 2^13504407 is an apocalyptic number.

13504407 is a deficient number, since it is larger than the sum of its proper divisors (7280745).

13504407 is a wasteful number, since it uses less digits than its factorization.

13504407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 13504407 is about 3674.8342819779. The cubic root of 13504407 is about 238.1360648891.

Adding to 13504407 its reverse (70440531), we get a palindrome (83944938).

The spelling of 13504407 in words is "thirteen million, five hundred four thousand, four hundred seven".