218214704 has 20 divisors (see below), whose sum is σ = 436430400. Its totient is φ = 105587520.

The previous prime is 218214653. The next prime is 218214707. The reversal of 218214704 is 407412812.

218214704 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

218214704 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (218214707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219479 + ... + 220470.

It is an arithmetic number, because the mean of its divisors is an integer number (21821520).

Almost surely, 2^218214704 is an apocalyptic number.

It is an amenable number.

218214704 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

218214704 is a wasteful number, since it uses less digits than its factorization.

218214704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439988 (or 439982 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 218214704 is about 14772.0920657840. The cubic root of 218214704 is about 602.0436828822.

The spelling of 218214704 in words is "two hundred eighteen million, two hundred fourteen thousand, seven hundred four".