16856256 has 28 divisors (see below), whose sum is σ = 44599352. Its totient is φ = 5618688.

The previous prime is 16856239. The next prime is 16856261. The reversal of 16856256 is 65265861.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 43705 + ... + 44088.

It is an arithmetic number, because the mean of its divisors is an integer number (1592834).

Almost surely, 2^16856256 is an apocalyptic number.

16856256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16856256 is an abundant number, since it is smaller than the sum of its proper divisors (27743096).

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

16856256 is an equidigital number, since it uses as much as digits as its factorization.

16856256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87808 (or 87798 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 16856256 is about 4105.6371003780. The cubic root of 16856256 is about 256.4013885535.

The spelling of 16856256 in words is "sixteen million, eight hundred fifty-six thousand, two hundred fifty-six".