216530116 has 12 divisors (see below), whose sum is σ = 413375760. Its totient is φ = 98422760.

The previous prime is 216530113. The next prime is 216530117. The reversal of 216530116 is 611035612.

It is a super-2 number, since 2×216530116² = 93770582269946912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216530113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2460526 + ... + 2460613.

It is an arithmetic number, because the mean of its divisors is an integer number (34447980).

Almost surely, 2^216530116 is an apocalyptic number.

It is an amenable number.

216530116 is a deficient number, since it is larger than the sum of its proper divisors (196845644).

216530116 is a wasteful number, since it uses less digits than its factorization.

216530116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921154 (or 4921152 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 216530116 is about 14714.9623173150. The cubic root of 216530116 is about 600.4904471416.

Adding to 216530116 its reverse (611035612), we get a palindrome (827565728).

The spelling of 216530116 in words is "two hundred sixteen million, five hundred thirty thousand, one hundred sixteen".