16820328 has 48 divisors (see below), whose sum is σ = 48919680. Its totient is φ = 4805472.

The previous prime is 16820317. The next prime is 16820333. The reversal of 16820328 is 82302861.

It is a junction number, because it is equal to n+sod(n) for n = 16820295 and 16820304.

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 11 ways as a sum of consecutive naturals, for example, 5976 + ... + 8327.

It is an arithmetic number, because the mean of its divisors is an integer number (1019160).

Almost surely, 2^16820328 is an apocalyptic number.

It is an amenable number.

16820328 is an abundant number, since it is smaller than the sum of its proper divisors (32099352).

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

16820328 is a wasteful number, since it uses less digits than its factorization.

16820328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14326 (or 14315 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 16820328 is about 4101.2593187947. The cubic root of 16820328 is about 256.2190914138.

It can be divided in two parts, 168 and 20328, that multiplied together give a square (3415104 = 1848²).

The spelling of 16820328 in words is "sixteen million, eight hundred twenty thousand, three hundred twenty-eight".