3216828 has 12 divisors (see below), whose sum is σ = 7505960. Its totient is φ = 1072272.

The previous prime is 3216827. The next prime is 3216853. The reversal of 3216828 is 8286123.

3216828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 3216795 and 3216804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3216827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134023 + ... + 134046.

Almost surely, 2^3216828 is an apocalyptic number.

It is an amenable number.

3216828 is an abundant number, since it is smaller than the sum of its proper divisors (4289132).

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

3216828 is a wasteful number, since it uses less digits than its factorization.

3216828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268076 (or 268074 counting only the distinct ones).

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

The square root of 3216828 is about 1793.5517834732. The cubic root of 3216828 is about 147.6191204730.

The spelling of 3216828 in words is "three million, two hundred sixteen thousand, eight hundred twenty-eight".