13481447 has 8 divisors (see below), whose sum is σ = 15549600. Its totient is φ = 11448864.

The previous prime is 13481443. The next prime is 13481477. The reversal of 13481447 is 74418431.

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

It is not a de Polignac number, because 13481447 - 2² = 13481443 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 (13481443) 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, 8072 + ... + 9597.

It is an arithmetic number, because the mean of its divisors is an integer number (1943700).

Almost surely, 2^13481447 is an apocalyptic number.

13481447 is a deficient number, since it is larger than the sum of its proper divisors (2068153).

13481447 is a wasteful number, since it uses less digits than its factorization.

13481447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17785.

The product of its digits is 10752, while the sum is 32.

The square root of 13481447 is about 3671.7090026308. The cubic root of 13481447 is about 238.0010298192.

Adding to 13481447 its reverse (74418431), we get a palindrome (87899878).

The spelling of 13481447 in words is "thirteen million, four hundred eighty-one thousand, four hundred forty-seven".