16842856 has 8 divisors (see below), whose sum is σ = 31580370. Its totient is φ = 8421424.

The previous prime is 16842851. The next prime is 16842863. The reversal of 16842856 is 65824861.

It can be written as a sum of positive squares in only one way, i.e., 14976900 + 1865956 = 3870^2 + 1366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (16842851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052671 + ... + 1052686.

Almost surely, 2^16842856 is an apocalyptic number.

It is an amenable number.

16842856 is a deficient number, since it is larger than the sum of its proper divisors (14737514).

16842856 is a wasteful number, since it uses less digits than its factorization.

16842856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105363 (or 2105359 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 16842856 is about 4104.0048732915. The cubic root of 16842856 is about 256.3334278422. Note that the first 3 decimals are identical.

Subtracting from 16842856 its sum of digits (40), we obtain a square (16842816 = 4104²).

The spelling of 16842856 in words is "sixteen million, eight hundred forty-two thousand, eight hundred fifty-six".