216908118 has 112 divisors (see below), whose sum is σ = 569444256. Its totient is φ = 60652800.

The previous prime is 216908099. The next prime is 216908119. The reversal of 216908118 is 811809612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216908119) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 540718 + ... + 541118.

Almost surely, 2^216908118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216908118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284722128).

216908118 is an abundant number, since it is smaller than the sum of its proper divisors (352536138).

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

216908118 is an equidigital number, since it uses as much as digits as its factorization.

216908118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 216908118 is about 14727.8008541669. The cubic root of 216908118 is about 600.8396743634.

The spelling of 216908118 in words is "two hundred sixteen million, nine hundred eight thousand, one hundred eighteen".