13180447 has 4 divisors (see below), whose sum is σ = 15063376. Its totient is φ = 11297520.

The previous prime is 13180429. The next prime is 13180459. The reversal of 13180447 is 74408131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13180447 - 2¹⁵ = 13147679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13180477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941454 + ... + 941467.

It is an arithmetic number, because the mean of its divisors is an integer number (3765844).

Almost surely, 2^13180447 is an apocalyptic number.

13180447 is a deficient number, since it is larger than the sum of its proper divisors (1882929).

13180447 is an equidigital number, since it uses as much as digits as its factorization.

13180447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882928.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 13180447 is about 3630.4885346190. The cubic root of 13180447 is about 236.2163999508.

Adding to 13180447 its reverse (74408131), we get a palindrome (87588578).

The spelling of 13180447 in words is "thirteen million, one hundred eighty thousand, four hundred forty-seven".