16321984 has 28 divisors (see below), whose sum is σ = 37016944. Its totient is φ = 6994944.

The previous prime is 16321961. The next prime is 16321999. The reversal of 16321984 is 48912361.

It is a tau number, because it is divible by the number of its divisors (28).

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, 17769 + ... + 18664.

Almost surely, 2^16321984 is an apocalyptic number.

16321984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16321984 is an abundant number, since it is smaller than the sum of its proper divisors (20694960).

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

16321984 is an equidigital number, since it uses as much as digits as its factorization.

16321984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36452 (or 36442 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 16321984 is about 4040.0475244729. The cubic root of 16321984 is about 253.6633065491.

The spelling of 16321984 in words is "sixteen million, three hundred twenty-one thousand, nine hundred eighty-four".