218828712 has 16 divisors (see below), whose sum is σ = 547071840. Its totient is φ = 72942896.

The previous prime is 218828711. The next prime is 218828713. The reversal of 218828712 is 217828812.

It is an interprime number because it is at equal distance from previous prime (218828711) and next prime (218828713).

It is not an unprimeable number, because it can be changed into a prime (218828711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4558908 + ... + 4558955.

It is an arithmetic number, because the mean of its divisors is an integer number (34191990).

Almost surely, 2^218828712 is an apocalyptic number.

It is an amenable number.

218828712 is an abundant number, since it is smaller than the sum of its proper divisors (328243128).

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

218828712 is a wasteful number, since it uses less digits than its factorization.

218828712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9117872 (or 9117868 counting only the distinct ones).

The product of its digits is 28672, while the sum is 39.

The square root of 218828712 is about 14792.8601696900. The cubic root of 218828712 is about 602.6078267556.

The spelling of 218828712 in words is "two hundred eighteen million, eight hundred twenty-eight thousand, seven hundred twelve".