13004432 has 40 divisors (see below), whose sum is σ = 29242176. Its totient is φ = 5486976.

The previous prime is 13004393. The next prime is 13004449. The reversal of 13004432 is 23440031.

It is a self number, because there is not a number n which added to its sum of digits gives 13004432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6638 + ... + 8370.

Almost surely, 2^13004432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13004432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14621088).

13004432 is an abundant number, since it is smaller than the sum of its proper divisors (16237744).

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

13004432 is a wasteful number, since it uses less digits than its factorization.

13004432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815 (or 1809 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 13004432 is about 3606.1658309068. The cubic root of 13004432 is about 235.1601865446.

Adding to 13004432 its reverse (23440031), we get a palindrome (36444463).

The spelling of 13004432 in words is "thirteen million, four thousand, four hundred thirty-two".