216104316 has 12 divisors (see below), whose sum is σ = 504243432. Its totient is φ = 72034768.

The previous prime is 216104311. The next prime is 216104327. The reversal of 216104316 is 613401612.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216104311) 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, 9004335 + ... + 9004358.

It is an arithmetic number, because the mean of its divisors is an integer number (42020286).

Almost surely, 2^216104316 is an apocalyptic number.

It is an amenable number.

216104316 is an abundant number, since it is smaller than the sum of its proper divisors (288139116).

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

216104316 is a wasteful number, since it uses less digits than its factorization.

216104316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18008700 (or 18008698 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 216104316 is about 14700.4869307108. The cubic root of 216104316 is about 600.0965733440.

Adding to 216104316 its reverse (613401612), we get a palindrome (829505928).

The spelling of 216104316 in words is "two hundred sixteen million, one hundred four thousand, three hundred sixteen".