216392316 has 96 divisors (see below), whose sum is σ = 601198080. Its totient is φ = 59270400.

The previous prime is 216392299. The next prime is 216392329. The reversal of 216392316 is 613293612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513786 + ... + 514206.

It is an arithmetic number, because the mean of its divisors is an integer number (6262480).

Almost surely, 2^216392316 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 216392316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300599040).

216392316 is an abundant number, since it is smaller than the sum of its proper divisors (384805764).

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

216392316 is a wasteful number, since it uses less digits than its factorization.

216392316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 673 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 216392316 is about 14710.2792631547. The cubic root of 216392316 is about 600.3630358529.

The spelling of 216392316 in words is "two hundred sixteen million, three hundred ninety-two thousand, three hundred sixteen".