216603200 has 168 divisors, whose sum is σ = 601699584. Its totient is φ = 76032000.

The previous prime is 216603187. The next prime is 216603221. The reversal of 216603200 is 2306612.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 545402 + ... + 545798.

Almost surely, 2^216603200 is an apocalyptic number.

216603200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216603200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300849792).

216603200 is an abundant number, since it is smaller than the sum of its proper divisors (385096384).

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

216603200 is a wasteful number, since it uses less digits than its factorization.

216603200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 216603200 is about 14717.4454305087. The cubic root of 216603200 is about 600.5579994187.

Adding to 216603200 its reverse (2306612), we get a palindrome (218909812).

The spelling of 216603200 in words is "two hundred sixteen million, six hundred three thousand, two hundred".