13321432 has 16 divisors (see below), whose sum is σ = 26292600. Its totient is φ = 6310080.

The previous prime is 13321403. The next prime is 13321447. The reversal of 13321432 is 23412331.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 43669 + ... + 43972.

Almost surely, 2^13321432 is an apocalyptic number.

It is an amenable number.

13321432 is a deficient number, since it is larger than the sum of its proper divisors (12971168).

13321432 is a wasteful number, since it uses less digits than its factorization.

13321432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87666 (or 87662 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 13321432 is about 3649.8536956980. The cubic root of 13321432 is about 237.0556463423.

Adding to 13321432 its reverse (23412331), we get a palindrome (36733763).

The spelling of 13321432 in words is "thirteen million, three hundred twenty-one thousand, four hundred thirty-two".