216320120 has 16 divisors (see below), whose sum is σ = 486720360. Its totient is φ = 86528032.

The previous prime is 216320099. The next prime is 216320171. The reversal of 216320120 is 21023612.

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 3 ways as a sum of consecutive naturals, for example, 2703962 + ... + 2704041.

Almost surely, 2^216320120 is an apocalyptic number.

216320120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216320120 is an abundant number, since it is smaller than the sum of its proper divisors (270400240).

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

216320120 is a wasteful number, since it uses less digits than its factorization.

216320120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5408014 (or 5408010 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 216320120 is about 14707.8251281418. The cubic root of 216320120 is about 600.2962610989.

Adding to 216320120 its reverse (21023612), we get a palindrome (237343732).

The spelling of 216320120 in words is "two hundred sixteen million, three hundred twenty thousand, one hundred twenty".