216327320 has 32 divisors (see below), whose sum is σ = 530986320. Its totient is φ = 78664320.

The previous prime is 216327311. The next prime is 216327337. The reversal of 216327320 is 23723612.

It is a self number, because there is not a number n which added to its sum of digits gives 216327320.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 245387 + ... + 246266.

Almost surely, 2^216327320 is an apocalyptic number.

216327320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216327320 is an abundant number, since it is smaller than the sum of its proper divisors (314659000).

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

216327320 is a wasteful number, since it uses less digits than its factorization.

216327320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491675 (or 491671 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 216327320 is about 14708.0698937692. The cubic root of 216327320 is about 600.3029211130.

The spelling of 216327320 in words is "two hundred sixteen million, three hundred twenty-seven thousand, three hundred twenty".