13501444 has 24 divisors (see below), whose sum is σ = 26093088. Its totient is φ = 6061440.

The previous prime is 13501427. The next prime is 13501447. The reversal of 13501444 is 44410531.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (13501447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1804 + ... + 5500.

It is an arithmetic number, because the mean of its divisors is an integer number (1087212).

Almost surely, 2^13501444 is an apocalyptic number.

It is an amenable number.

13501444 is a deficient number, since it is larger than the sum of its proper divisors (12591644).

13501444 is a wasteful number, since it uses less digits than its factorization.

13501444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795 (or 3793 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 13501444 is about 3674.4311124309. The cubic root of 13501444 is about 238.1186471486.

Adding to 13501444 its reverse (44410531), we get a palindrome (57911975).

The spelling of 13501444 in words is "thirteen million, five hundred one thousand, four hundred forty-four".