13506444 has 36 divisors (see below), whose sum is σ = 39019344. Its totient is φ = 3858912.

The previous prime is 13506439. The next prime is 13506481. The reversal of 13506444 is 44460531.

13506444 is a `hidden beast` number, since 13 + 5 + 0 + 644 + 4 = 666.

13506444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26547 + ... + 27050.

Almost surely, 2^13506444 is an apocalyptic number.

13506444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13506444 is an abundant number, since it is smaller than the sum of its proper divisors (25512900).

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

13506444 is a wasteful number, since it uses less digits than its factorization.

13506444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53614 (or 53609 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 13506444 is about 3675.1114268822. Note that the first 3 decimals coincide. The cubic root of 13506444 is about 238.1480377405.

Adding to 13506444 its reverse (44460531), we get a palindrome (57966975).

The spelling of 13506444 in words is "thirteen million, five hundred six thousand, four hundred forty-four".