16979856 has 20 divisors (see below), whose sum is σ = 43864752. Its totient is φ = 5659936.

The previous prime is 16979849. The next prime is 16979861. The reversal of 16979856 is 65897961.

It is a junction number, because it is equal to n+sod(n) for n = 16979799 and 16979808.

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, 176826 + ... + 176921.

Almost surely, 2^16979856 is an apocalyptic number.

16979856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16979856 is an abundant number, since it is smaller than the sum of its proper divisors (26884896).

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

16979856 is a wasteful number, since it uses less digits than its factorization.

16979856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353758 (or 353752 counting only the distinct ones).

The product of its digits is 816480, while the sum is 51.

The square root of 16979856 is about 4120.6620827241. The cubic root of 16979856 is about 257.0265583439.

The spelling of 16979856 in words is "sixteen million, nine hundred seventy-nine thousand, eight hundred fifty-six".