216316716 has 96 divisors (see below), whose sum is σ = 633067008. Its totient is φ = 55848960.

The previous prime is 216316673. The next prime is 216316717. The reversal of 216316716 is 617613612.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (216316717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177726 + ... + 178938.

It is an arithmetic number, because the mean of its divisors is an integer number (6594448).

Almost surely, 2^216316716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216316716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316533504).

216316716 is an abundant number, since it is smaller than the sum of its proper divisors (416750292).

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

216316716 is a wasteful number, since it uses less digits than its factorization.

216316716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431 (or 1429 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 216316716 is about 14707.7094069743. The cubic root of 216316716 is about 600.2931123408.

The spelling of 216316716 in words is "two hundred sixteen million, three hundred sixteen thousand, seven hundred sixteen".