16985984 has 32 divisors (see below), whose sum is σ = 34131240. Its totient is φ = 8419840.

The previous prime is 16985971. The next prime is 16985993. The reversal of 16985984 is 48958961.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16262 + ... + 17274.

Almost surely, 2^16985984 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 16985984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17065620).

16985984 is an abundant number, since it is smaller than the sum of its proper divisors (17145256).

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

16985984 is a wasteful number, since it uses less digits than its factorization.

16985984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1146 counting only the distinct ones).

The product of its digits is 622080, while the sum is 50.

The square root of 16985984 is about 4121.4055854769. The cubic root of 16985984 is about 257.0574747684.

The spelling of 16985984 in words is "sixteen million, nine hundred eighty-five thousand, nine hundred eighty-four".