16856074 has 4 divisors (see below), whose sum is σ = 25284114. Its totient is φ = 8428036.

The previous prime is 16856071. The next prime is 16856089. The reversal of 16856074 is 47065861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15944049 + 912025 = 3993^2 + 955^2 .

It is not an unprimeable number, because it can be changed into a prime (16856071) 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, 4214017 + ... + 4214020.

Almost surely, 2^16856074 is an apocalyptic number.

16856074 is a deficient number, since it is larger than the sum of its proper divisors (8428040).

16856074 is an equidigital number, since it uses as much as digits as its factorization.

16856074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8428039.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 16856074 is about 4105.6149356704. The cubic root of 16856074 is about 256.4004657463.

The spelling of 16856074 in words is "sixteen million, eight hundred fifty-six thousand, seventy-four".