13290444 has 36 divisors (see below), whose sum is σ = 34681920. Its totient is φ = 4286880.

The previous prime is 13290421. The next prime is 13290449. The reversal of 13290444 is 44409231.

13290444 is a `hidden beast` number, since 132 + 90 + 444 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (13290449) 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 in 11 ways as a sum of consecutive naturals, for example, 4839 + ... + 7070.

Almost surely, 2^13290444 is an apocalyptic number.

It is an amenable number.

13290444 is an abundant number, since it is smaller than the sum of its proper divisors (21391476).

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

13290444 is a wasteful number, since it uses less digits than its factorization.

13290444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11950 (or 11945 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 13290444 is about 3645.6061224438. The cubic root of 13290444 is about 236.8716925532.

Adding to 13290444 its reverse (44409231), we get a palindrome (57699675).

The spelling of 13290444 in words is "thirteen million, two hundred ninety thousand, four hundred forty-four".