16855456 has 12 divisors (see below), whose sum is σ = 33184242. Its totient is φ = 8427712.

The previous prime is 16855427. The next prime is 16855457. The reversal of 16855456 is 65455861.

It can be written as a sum of positive squares in only one way, i.e., 16679056 + 176400 = 4084^2 + 420^2 .

It is not an unprimeable number, because it can be changed into a prime (16855457) by changing a digit.

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 as a sum of consecutive naturals, namely, 263335 + ... + 263398.

Almost surely, 2^16855456 is an apocalyptic number.

16855456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16855456 is a deficient number, since it is larger than the sum of its proper divisors (16328786).

16855456 is an equidigital number, since it uses as much as digits as its factorization.

16855456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526743 (or 526735 counting only the distinct ones).

The product of its digits is 144000, while the sum is 40.

The square root of 16855456 is about 4105.5396721990. The cubic root of 16855456 is about 256.3973322087.

The spelling of 16855456 in words is "sixteen million, eight hundred fifty-five thousand, four hundred fifty-six".