16344321 has 8 divisors (see below), whose sum is σ = 24905664. Its totient is φ = 9339600.

The previous prime is 16344319. The next prime is 16344331. The reversal of 16344321 is 12344361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16344321 - 2¹ = 16344319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16344291 and 16344300.

It is not an unprimeable number, because it can be changed into a prime (16344301) by changing a digit.

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, 389130 + ... + 389171.

It is an arithmetic number, because the mean of its divisors is an integer number (3113208).

Almost surely, 2^16344321 is an apocalyptic number.

It is an amenable number.

16344321 is a deficient number, since it is larger than the sum of its proper divisors (8561343).

16344321 is an equidigital number, since it uses as much as digits as its factorization.

16344321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778311.

The product of its digits is 1728, while the sum is 24.

The square root of 16344321 is about 4042.8110269959. The cubic root of 16344321 is about 253.7789684385.

Adding to 16344321 its reverse (12344361), we get a palindrome (28688682).

The spelling of 16344321 in words is "sixteen million, three hundred forty-four thousand, three hundred twenty-one".