16993982 has 16 divisors (see below), whose sum is σ = 27079920. Its totient is φ = 7970688.

The previous prime is 16993969. The next prime is 16994009. The reversal of 16993982 is 28939961.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12869 + ... + 14127.

It is an arithmetic number, because the mean of its divisors is an integer number (1692495).

Almost surely, 2^16993982 is an apocalyptic number.

16993982 is a deficient number, since it is larger than the sum of its proper divisors (10085938).

16993982 is a wasteful number, since it uses less digits than its factorization.

16993982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675.

The product of its digits is 209952, while the sum is 47.

The square root of 16993982 is about 4122.3757713241. The cubic root of 16993982 is about 257.0978143621.

The spelling of 16993982 in words is "sixteen million, nine hundred ninety-three thousand, nine hundred eighty-two".