16859868 has 12 divisors (see below), whose sum is σ = 39339720. Its totient is φ = 5619952.

The previous prime is 16859867. The next prime is 16859881. The reversal of 16859868 is 86895861.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 16859868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16859863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702483 + ... + 702506.

It is an arithmetic number, because the mean of its divisors is an integer number (3278310).

Almost surely, 2^16859868 is an apocalyptic number.

It is an amenable number.

16859868 is an abundant number, since it is smaller than the sum of its proper divisors (22479852).

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

16859868 is a wasteful number, since it uses less digits than its factorization.

16859868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404996 (or 1404994 counting only the distinct ones).

The product of its digits is 829440, while the sum is 51.

The square root of 16859868 is about 4106.0769598243. The cubic root of 16859868 is about 256.4197013523.

The spelling of 16859868 in words is "sixteen million, eight hundred fifty-nine thousand, eight hundred sixty-eight".