16856984 has 16 divisors (see below), whose sum is σ = 32125920. Its totient is φ = 8290080.

The previous prime is 16856977. The next prime is 16856993. The reversal of 16856984 is 48965861.

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, 16784 + ... + 17759.

It is an arithmetic number, because the mean of its divisors is an integer number (2007870).

Almost surely, 2^16856984 is an apocalyptic number.

It is an amenable number.

16856984 is a deficient number, since it is larger than the sum of its proper divisors (15268936).

16856984 is a wasteful number, since it uses less digits than its factorization.

16856984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34610 (or 34606 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 16856984 is about 4105.7257580116. The cubic root of 16856984 is about 256.4050797157.

The spelling of 16856984 in words is "sixteen million, eight hundred fifty-six thousand, nine hundred eighty-four".