218324712 has 32 divisors (see below), whose sum is σ = 546583680. Its totient is φ = 72672000.

The previous prime is 218324681. The next prime is 218324719. The reversal of 218324712 is 217423812.

218324712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 218324712.

It is not an unprimeable number, because it can be changed into a prime (218324719) 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, 11968 + ... + 24080.

It is an arithmetic number, because the mean of its divisors is an integer number (17080740).

Almost surely, 2^218324712 is an apocalyptic number.

It is an amenable number.

218324712 is an abundant number, since it is smaller than the sum of its proper divisors (328258968).

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

218324712 is a wasteful number, since it uses less digits than its factorization.

218324712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12873 (or 12869 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 218324712 is about 14775.8151044198. The cubic root of 218324712 is about 602.1448347813.

The spelling of 218324712 in words is "two hundred eighteen million, three hundred twenty-four thousand, seven hundred twelve".