3968216828 has 12 divisors (see below), whose sum is σ = 6958526232. Its totient is φ = 1980066480.

The previous prime is 3968216807. The next prime is 3968216843. The reversal of 3968216828 is 8286128693.

It is a self number, because there is not a number n which added to its sum of digits gives 3968216828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008275 + ... + 1012202.

It is an arithmetic number, because the mean of its divisors is an integer number (579877186).

Almost surely, 2^3968216828 is an apocalyptic number.

It is an amenable number.

3968216828 is a deficient number, since it is larger than the sum of its proper divisors (2990309404).

3968216828 is a wasteful number, since it uses less digits than its factorization.

3968216828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020972 (or 2020970 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The square root of 3968216828 is about 62993.7840425545. The cubic root of 3968216828 is about 1583.1854800983.

The spelling of 3968216828 in words is "three billion, nine hundred sixty-eight million, two hundred sixteen thousand, eight hundred twenty-eight".