16990984 has 16 divisors (see below), whose sum is σ = 32957100. Its totient is φ = 8202432.

The previous prime is 16990913. The next prime is 16990993. The reversal of 16990984 is 48909961.

It can be written as a sum of positive squares in 2 ways, for example, as 16990884 + 100 = 4122^2 + 10^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36387 + ... + 36850.

Almost surely, 2^16990984 is an apocalyptic number.

It is an amenable number.

16990984 is a deficient number, since it is larger than the sum of its proper divisors (15966116).

16990984 is a wasteful number, since it uses less digits than its factorization.

16990984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73272 (or 73268 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 16990984 is about 4122.0121300161. The cubic root of 16990984 is about 257.0826948024.

The spelling of 16990984 in words is "sixteen million, nine hundred ninety thousand, nine hundred eighty-four".