218829216 has 24 divisors (see below), whose sum is σ = 574426944. Its totient is φ = 72943040.

The previous prime is 218829197. The next prime is 218829223. The reversal of 218829216 is 612928812.

It is a tau number, because it is divible by the number of its divisors (24).

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, 1139640 + ... + 1139831.

It is an arithmetic number, because the mean of its divisors is an integer number (23934456).

Almost surely, 2^218829216 is an apocalyptic number.

It is an amenable number.

218829216 is an abundant number, since it is smaller than the sum of its proper divisors (355597728).

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

218829216 is a wasteful number, since it uses less digits than its factorization.

218829216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279484 (or 2279476 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 218829216 is about 14792.8772049253. The cubic root of 218829216 is about 602.6082893916.

The spelling of 218829216 in words is "two hundred eighteen million, eight hundred twenty-nine thousand, two hundred sixteen".