13807144 has 16 divisors (see below), whose sum is σ = 27880020. Its totient is φ = 6372480.

The previous prime is 13807141. The next prime is 13807151. The reversal of 13807144 is 44170831.

It can be written as a sum of positive squares in 2 ways, for example, as 13410244 + 396900 = 3662^2 + 630^2 .

It is not an unprimeable number, because it can be changed into a prime (13807141) 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 3 ways as a sum of consecutive naturals, for example, 66277 + ... + 66484.

Almost surely, 2^13807144 is an apocalyptic number.

It is an amenable number.

13807144 is an abundant number, since it is smaller than the sum of its proper divisors (14072876).

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

13807144 is a wasteful number, since it uses less digits than its factorization.

13807144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132780 (or 132776 counting only the distinct ones).

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

The square root of 13807144 is about 3715.7965498665. The cubic root of 13807144 is about 239.9024140298.

Adding to 13807144 its reverse (44170831), we get a palindrome (57977975).

The spelling of 13807144 in words is "thirteen million, eight hundred seven thousand, one hundred forty-four".