216173200 has 30 divisors (see below), whose sum is σ = 519357074. Its totient is φ = 86469120.

The previous prime is 216173171. The next prime is 216173201. The reversal of 216173200 is 2371612.

It can be written as a sum of positive squares in 3 ways, for example, as 31539456 + 184633744 = 5616^2 + 13588^2 .

It is not an unprimeable number, because it can be changed into a prime (216173201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 269817 + ... + 270616.

Almost surely, 2^216173200 is an apocalyptic number.

216173200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216173200 is an abundant number, since it is smaller than the sum of its proper divisors (303183874).

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

216173200 is a wasteful number, since it uses less digits than its factorization.

216173200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540451 (or 540440 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 216173200 is about 14702.8296596267. The cubic root of 216173200 is about 600.1603275250.

The spelling of 216173200 in words is "two hundred sixteen million, one hundred seventy-three thousand, two hundred".