16856000 has 168 divisors, whose sum is σ = 49688496. Its totient is φ = 5644800.

The previous prime is 16855999. The next prime is 16856009. The reversal of 16856000 is 65861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16856009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391979 + ... + 392021.

Almost surely, 2^16856000 is an apocalyptic number.

16856000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16856000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24844248).

16856000 is an abundant number, since it is smaller than the sum of its proper divisors (32832496).

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

16856000 is an equidigital number, since it uses as much as digits as its factorization.

16856000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 16856000 is about 4105.6059236123. The cubic root of 16856000 is about 256.4000905371.

The spelling of 16856000 in words is "sixteen million, eight hundred fifty-six thousand".