217328682 has 8 divisors (see below), whose sum is σ = 434657376. Its totient is φ = 72442892.

The previous prime is 217328651. The next prime is 217328689. The reversal of 217328682 is 286823712.

217328682 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

217328682 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 217328682.

It is not an unprimeable number, because it can be changed into a prime (217328689) 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, 18110718 + ... + 18110729.

It is an arithmetic number, because the mean of its divisors is an integer number (54332172).

Almost surely, 2^217328682 is an apocalyptic number.

217328682 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.

217328682 is a wasteful number, since it uses less digits than its factorization.

217328682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36221452.

The product of its digits is 64512, while the sum is 39.

The square root of 217328682 is about 14742.0718353968. The cubic root of 217328682 is about 601.2277471259.

The spelling of 217328682 in words is "two hundred seventeen million, three hundred twenty-eight thousand, six hundred eighty-two".