216634130 has 8 divisors (see below), whose sum is σ = 389941452. Its totient is φ = 86653648.

The previous prime is 216634123. The next prime is 216634133. The reversal of 216634130 is 31436612.

216634130 is digitally balanced in base 3, 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 2 ways, for example, as 187936681 + 28697449 = 13709^2 + 5357^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 216634130.

It is not an unprimeable number, because it can be changed into a prime (216634133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10831697 + ... + 10831716.

Almost surely, 2^216634130 is an apocalyptic number.

216634130 is a deficient number, since it is larger than the sum of its proper divisors (173307322).

216634130 is a wasteful number, since it uses less digits than its factorization.

216634130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21663420.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 216634130 is about 14718.4961867713. The cubic root of 216634130 is about 600.5865837530.

The spelling of 216634130 in words is "two hundred sixteen million, six hundred thirty-four thousand, one hundred thirty".