216530322 has 8 divisors (see below), whose sum is σ = 433060656. Its totient is φ = 72176772.

The previous prime is 216530311. The next prime is 216530339. The reversal of 216530322 is 223035612.

It is a sphenic number, since it is the product of 3 distinct primes.

216530322 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 216530292 and 216530301.

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, 18044188 + ... + 18044199.

It is an arithmetic number, because the mean of its divisors is an integer number (54132582).

Almost surely, 2^216530322 is an apocalyptic number.

216530322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

216530322 is a wasteful number, since it uses less digits than its factorization.

216530322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36088392.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 216530322 is about 14714.9693169915. The cubic root of 216530322 is about 600.4906375708.

Adding to 216530322 its reverse (223035612), we get a palindrome (439565934).

The spelling of 216530322 in words is "two hundred sixteen million, five hundred thirty thousand, three hundred twenty-two".