216719808 has 112 divisors (see below), whose sum is σ = 616817664. Its totient is φ = 66908160.

The previous prime is 216719779. The next prime is 216719819. The reversal of 216719808 is 808917612.

It is a self number, because there is not a number n which added to its sum of digits gives 216719808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218193 + ... + 219183.

Almost surely, 2^216719808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216719808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308408832).

216719808 is an abundant number, since it is smaller than the sum of its proper divisors (400097856).

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

216719808 is a wasteful number, since it uses less digits than its factorization.

216719808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 216719808 is about 14721.4064545477. The cubic root of 216719808 is about 600.6657499108.

The spelling of 216719808 in words is "two hundred sixteen million, seven hundred nineteen thousand, eight hundred eight".