216200320 has 64 divisors (see below), whose sum is σ = 590702400. Its totient is φ = 74124288.

The previous prime is 216200273. The next prime is 216200351. The reversal of 216200320 is 23002612.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 216200294 and 216200303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19650 + ... + 28609.

It is an arithmetic number, because the mean of its divisors is an integer number (9229725).

Almost surely, 2^216200320 is an apocalyptic number.

216200320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216200320 is an abundant number, since it is smaller than the sum of its proper divisors (374502080).

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

216200320 is an equidigital number, since it uses as much as digits as its factorization.

216200320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48285 (or 48273 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 216200320 is about 14703.7519021507. The cubic root of 216200320 is about 600.1854241720.

Adding to 216200320 its reverse (23002612), we get a palindrome (239202932).

The spelling of 216200320 in words is "two hundred sixteen million, two hundred thousand, three hundred twenty".