216200056 has 8 divisors (see below), whose sum is σ = 405375120. Its totient is φ = 108100024.

The previous prime is 216200029. The next prime is 216200057. The reversal of 216200056 is 650002612.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216200057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13512496 + ... + 13512511.

It is an arithmetic number, because the mean of its divisors is an integer number (50671890).

Almost surely, 2^216200056 is an apocalyptic number.

It is an amenable number.

216200056 is a deficient number, since it is larger than the sum of its proper divisors (189175064).

216200056 is a wasteful number, since it uses less digits than its factorization.

216200056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27025013 (or 27025009 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 216200056 is about 14703.7429248474. The cubic root of 216200056 is about 600.1851798785.

Adding to 216200056 its reverse (650002612), we get a palindrome (866202668).

The spelling of 216200056 in words is "two hundred sixteen million, two hundred thousand, fifty-six".