216424117 has 64 divisors (see below), whose sum is σ = 298045440. Its totient is φ = 152409600.

The previous prime is 216424099. The next prime is 216424133. The reversal of 216424117 is 711424612.

It is not a de Polignac number, because 216424117 - 2¹¹ = 216422069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216422117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3048192 + ... + 3048262.

It is an arithmetic number, because the mean of its divisors is an integer number (4656960).

Almost surely, 2^216424117 is an apocalyptic number.

It is an amenable number.

216424117 is a deficient number, since it is larger than the sum of its proper divisors (81621323).

216424117 is a wasteful number, since it uses less digits than its factorization.

216424117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194.

The product of its digits is 2688, while the sum is 28.

The square root of 216424117 is about 14711.3601342636. The cubic root of 216424117 is about 600.3924441826.

Adding to 216424117 its reverse (711424612), we get a palindrome (927848729).

The spelling of 216424117 in words is "two hundred sixteen million, four hundred twenty-four thousand, one hundred seventeen".