13667144 has 16 divisors (see below), whose sum is σ = 25694700. Its totient is φ = 6815232.

The previous prime is 13667141. The next prime is 13667153. The reversal of 13667144 is 44176631.

It can be written as a sum of positive squares in 2 ways, for example, as 10562500 + 3104644 = 3250^2 + 1762^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13667144.

It is not an unprimeable number, because it can be changed into a prime (13667141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1184 + ... + 5360.

Almost surely, 2^13667144 is an apocalyptic number.

It is an amenable number.

13667144 is a deficient number, since it is larger than the sum of its proper divisors (12027556).

13667144 is a wasteful number, since it uses less digits than its factorization.

13667144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592 (or 4588 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 13667144 is about 3696.9100611186. The cubic root of 13667144 is about 239.0888134762.

The spelling of 13667144 in words is "thirteen million, six hundred sixty-seven thousand, one hundred forty-four".