216130330 has 32 divisors (see below), whose sum is σ = 433414800. Its totient is φ = 77048832.

The previous prime is 216130309. The next prime is 216130349. The reversal of 216130330 is 33031612.

216130330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 11840481 + 204289849 = 3441^2 + 14293^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216130298 and 216130307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24895 + ... + 32434.

Almost surely, 2^216130330 is an apocalyptic number.

216130330 is an abundant number, since it is smaller than the sum of its proper divisors (217284470).

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

216130330 is a wasteful number, since it uses less digits than its factorization.

216130330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57378.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 216130330 is about 14701.3717047084. The cubic root of 216130330 is about 600.1206516629.

Adding to 216130330 its reverse (33031612), we get a palindrome (249161942).

The spelling of 216130330 in words is "two hundred sixteen million, one hundred thirty thousand, three hundred thirty".