216305124 has 24 divisors (see below), whose sum is σ = 576813888. Its totient is φ = 61801440.

The previous prime is 216305123. The next prime is 216305143. The reversal of 216305124 is 421503612.

216305124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 216305094 and 216305103.

It is not an unprimeable number, because it can be changed into a prime (216305123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1287447 + ... + 1287614.

It is an arithmetic number, because the mean of its divisors is an integer number (24033912).

Almost surely, 2^216305124 is an apocalyptic number.

It is an amenable number.

216305124 is an abundant number, since it is smaller than the sum of its proper divisors (360508764).

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

216305124 is a wasteful number, since it uses less digits than its factorization.

216305124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575075 (or 2575073 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 216305124 is about 14707.3153226549. The cubic root of 216305124 is about 600.2823892952.

Adding to 216305124 its reverse (421503612), we get a palindrome (637808736).

The spelling of 216305124 in words is "two hundred sixteen million, three hundred five thousand, one hundred twenty-four".