13671144 has 24 divisors (see below), whose sum is σ = 37026210. Its totient is φ = 4557024.

The previous prime is 13671143. The next prime is 13671173. The reversal of 13671144 is 44117631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8054244 + 5616900 = 2838^2 + 2370^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (13671143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94867 + ... + 95010.

Almost surely, 2^13671144 is an apocalyptic number.

It is an amenable number.

13671144 is an abundant number, since it is smaller than the sum of its proper divisors (23355066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13671144 is a wasteful number, since it uses less digits than its factorization.

13671144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189889 (or 189882 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 13671144 is about 3697.4510138743. The cubic root of 13671144 is about 239.1121361243.

Adding to 13671144 its reverse (44117631), we get a palindrome (57788775).

The spelling of 13671144 in words is "thirteen million, six hundred seventy-one thousand, one hundred forty-four".