216829850 has 12 divisors (see below), whose sum is σ = 403303614. Its totient is φ = 86731920.

The previous prime is 216829831. The next prime is 216829867. The reversal of 216829850 is 58928612.

It can be written as a sum of positive squares in 3 ways, for example, as 78978769 + 137851081 = 8887^2 + 11741^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216829798 and 216829807.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2168249 + ... + 2168348.

Almost surely, 2^216829850 is an apocalyptic number.

216829850 is a deficient number, since it is larger than the sum of its proper divisors (186473764).

216829850 is a wasteful number, since it uses less digits than its factorization.

216829850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4336609 (or 4336604 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 216829850 is about 14725.1434627986. The cubic root of 216829850 is about 600.7673977124.

The spelling of 216829850 in words is "two hundred sixteen million, eight hundred twenty-nine thousand, eight hundred fifty".