216412235 has 16 divisors (see below), whose sum is σ = 280433664. Its totient is φ = 159376512.

The previous prime is 216412169. The next prime is 216412237. The reversal of 216412235 is 532214612.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 216412235 - 2¹⁸ = 216150091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216412237) 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, 20549 + ... + 29241.

It is an arithmetic number, because the mean of its divisors is an integer number (17527104).

Almost surely, 2^216412235 is an apocalyptic number.

216412235 is a deficient number, since it is larger than the sum of its proper divisors (64021429).

216412235 is a wasteful number, since it uses less digits than its factorization.

216412235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094.

The product of its digits is 2880, while the sum is 26.

The square root of 216412235 is about 14710.9562911457. The cubic root of 216412235 is about 600.3814565076.

Adding to 216412235 its reverse (532214612), we get a palindrome (748626847).

The spelling of 216412235 in words is "two hundred sixteen million, four hundred twelve thousand, two hundred thirty-five".