13855144 has 8 divisors (see below), whose sum is σ = 25978410. Its totient is φ = 6927568.

The previous prime is 13855141. The next prime is 13855151. The reversal of 13855144 is 44155831.

13855144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9180900 + 4674244 = 3030^2 + 2162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13855141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 865939 + ... + 865954.

Almost surely, 2^13855144 is an apocalyptic number.

It is an amenable number.

13855144 is a deficient number, since it is larger than the sum of its proper divisors (12123266).

13855144 is a wasteful number, since it uses less digits than its factorization.

13855144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731899 (or 1731895 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 13855144 is about 3722.2498572772. The cubic root of 13855144 is about 240.1800963032.

The spelling of 13855144 in words is "thirteen million, eight hundred fifty-five thousand, one hundred forty-four".