16448321 has 8 divisors (see below), whose sum is σ = 17082624. Its totient is φ = 15820560.

The previous prime is 16448297. The next prime is 16448323. The reversal of 16448321 is 12384461.

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

It is a cyclic number.

It is not a de Polignac number, because 16448321 - 2¹⁴ = 16431937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16448323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3830 + ... + 6896.

It is an arithmetic number, because the mean of its divisors is an integer number (2135328).

Almost surely, 2^16448321 is an apocalyptic number.

It is an amenable number.

16448321 is a deficient number, since it is larger than the sum of its proper divisors (634303).

16448321 is a wasteful number, since it uses less digits than its factorization.

16448321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271.

The product of its digits is 4608, while the sum is 29.

The square root of 16448321 is about 4055.6529683887. The cubic root of 16448321 is about 254.3161015831.

The spelling of 16448321 in words is "sixteen million, four hundred forty-eight thousand, three hundred twenty-one".