13536444 has 12 divisors (see below), whose sum is σ = 31585064. Its totient is φ = 4512144.

The previous prime is 13536433. The next prime is 13536469. The reversal of 13536444 is 44463531.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 564007 + ... + 564030.

Almost surely, 2^13536444 is an apocalyptic number.

It is an amenable number.

13536444 is an abundant number, since it is smaller than the sum of its proper divisors (18048620).

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

13536444 is a wasteful number, since it uses less digits than its factorization.

13536444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128044 (or 1128042 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 13536444 is about 3679.1906718734. The cubic root of 13536444 is about 238.3242291446.

Adding to 13536444 its reverse (44463531), we get a palindrome (57999975).

The spelling of 13536444 in words is "thirteen million, five hundred thirty-six thousand, four hundred forty-four".