215530234 has 8 divisors (see below), whose sum is σ = 323376768. Its totient is φ = 107737980.

The previous prime is 215530213. The next prime is 215530247. The reversal of 215530234 is 432035512.

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

It is a junction number, because it is equal to n+sod(n) for n = 215530199 and 215530208.

It is an unprimeable number.

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, 1492 + ... + 20815.

It is an arithmetic number, because the mean of its divisors is an integer number (40422096).

Almost surely, 2^215530234 is an apocalyptic number.

215530234 is a deficient number, since it is larger than the sum of its proper divisors (107846534).

215530234 is a wasteful number, since it uses less digits than its factorization.

215530234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27140.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 215530234 is about 14680.9479939137. The cubic root of 215530234 is about 599.5647157706.

Adding to 215530234 its reverse (432035512), we get a palindrome (647565746).

The spelling of 215530234 in words is "two hundred fifteen million, five hundred thirty thousand, two hundred thirty-four".