218028218 has 8 divisors (see below), whose sum is σ = 330982848. Its totient is φ = 107700604.

The previous prime is 218028203. The next prime is 218028241. The reversal of 218028218 is 812820812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656546 + ... + 656877.

It is an arithmetic number, because the mean of its divisors is an integer number (41372856).

Almost surely, 2^218028218 is an apocalyptic number.

218028218 is a deficient number, since it is larger than the sum of its proper divisors (112954630).

218028218 is a wasteful number, since it uses less digits than its factorization.

218028218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313508.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 218028218 is about 14765.7786113703. The cubic root of 218028218 is about 601.8721320898.

The spelling of 218028218 in words is "two hundred eighteen million, twenty-eight thousand, two hundred eighteen".