13601144 has 8 divisors (see below), whose sum is σ = 25502160. Its totient is φ = 6800568.

The previous prime is 13601143. The next prime is 13601149. The reversal of 13601144 is 44110631.

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

It is a super-2 number, since 2×13601144² = 369982236217472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13601143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 850064 + ... + 850079.

It is an arithmetic number, because the mean of its divisors is an integer number (3187770).

Almost surely, 2^13601144 is an apocalyptic number.

It is an amenable number.

13601144 is a deficient number, since it is larger than the sum of its proper divisors (11901016).

13601144 is a wasteful number, since it uses less digits than its factorization.

13601144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700149 (or 1700145 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 13601144 is about 3687.9728849329. The cubic root of 13601144 is about 238.7033310643.

Adding to 13601144 its reverse (44110631), we get a palindrome (57711775).

The spelling of 13601144 in words is "thirteen million, six hundred one thousand, one hundred forty-four".