16981996 has 6 divisors (see below), whose sum is σ = 29718500. Its totient is φ = 8490996.

The previous prime is 16981969. The next prime is 16982003. The reversal of 16981996 is 69918961.

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 as a sum of consecutive naturals, namely, 2122746 + ... + 2122753.

Almost surely, 2^16981996 is an apocalyptic number.

It is an amenable number.

16981996 is a deficient number, since it is larger than the sum of its proper divisors (12736504).

16981996 is a wasteful number, since it uses less digits than its factorization.

16981996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245503 (or 4245501 counting only the distinct ones).

The product of its digits is 209952, while the sum is 49.

The square root of 16981996 is about 4120.9217415525. The cubic root of 16981996 is about 257.0373557210.

The spelling of 16981996 in words is "sixteen million, nine hundred eighty-one thousand, nine hundred ninety-six".