216336828 has 24 divisors (see below), whose sum is σ = 517098960. Its totient is φ = 70353280.

The previous prime is 216336763. The next prime is 216336847. The reversal of 216336828 is 828633612.

216336828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219363 + ... + 220346.

It is an arithmetic number, because the mean of its divisors is an integer number (21545790).

Almost surely, 2^216336828 is an apocalyptic number.

It is an amenable number.

216336828 is an abundant number, since it is smaller than the sum of its proper divisors (300762132).

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

216336828 is a wasteful number, since it uses less digits than its factorization.

216336828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439757 (or 439755 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 216336828 is about 14708.3931141372. The cubic root of 216336828 is about 600.3117158052.

The spelling of 216336828 in words is "two hundred sixteen million, three hundred thirty-six thousand, eight hundred twenty-eight".