216500235 has 16 divisors (see below), whose sum is σ = 395886336. Its totient is φ = 98971488.

The previous prime is 216500201. The next prime is 216500237. The reversal of 216500235 is 532005612.

It is not a de Polignac number, because 216500235 - 2⁶ = 216500171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216500237) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1030849 + ... + 1031058.

It is an arithmetic number, because the mean of its divisors is an integer number (24742896).

Almost surely, 2^216500235 is an apocalyptic number.

216500235 is a deficient number, since it is larger than the sum of its proper divisors (179386101).

216500235 is a wasteful number, since it uses less digits than its factorization.

216500235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061922.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 216500235 is about 14713.9469551851. The cubic root of 216500235 is about 600.4628234545.

Adding to 216500235 its reverse (532005612), we get a palindrome (748505847).

The spelling of 216500235 in words is "two hundred sixteen million, five hundred thousand, two hundred thirty-five".