16909868 has 12 divisors (see below), whose sum is σ = 29623440. Its totient is φ = 8446032.

The previous prime is 16909859. The next prime is 16909877. The reversal of 16909868 is 86890961.

It is an interprime number because it is at equal distance from previous prime (16909859) and next prime (16909877).

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, 3953 + ... + 7031.

It is an arithmetic number, because the mean of its divisors is an integer number (2468620).

Almost surely, 2^16909868 is an apocalyptic number.

It is an amenable number.

16909868 is a deficient number, since it is larger than the sum of its proper divisors (12713572).

16909868 is a wasteful number, since it uses less digits than its factorization.

16909868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456 (or 4454 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 16909868 is about 4112.1609890665. The cubic root of 16909868 is about 256.6729325132.

The spelling of 16909868 in words is "sixteen million, nine hundred nine thousand, eight hundred sixty-eight".