217323852 has 24 divisors (see below), whose sum is σ = 536918256. Its totient is φ = 68179968.

The previous prime is 217323851. The next prime is 217323853. The reversal of 217323852 is 258323712.

217323852 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (217323851) and next prime (217323853).

It is not an unprimeable number, because it can be changed into a prime (217323851) 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 7 ways as a sum of consecutive naturals, for example, 532453 + ... + 532860.

It is an arithmetic number, because the mean of its divisors is an integer number (22371594).

Almost surely, 2^217323852 is an apocalyptic number.

It is an amenable number.

217323852 is an abundant number, since it is smaller than the sum of its proper divisors (319594404).

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

217323852 is a wasteful number, since it uses less digits than its factorization.

217323852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065337 (or 1065335 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 217323852 is about 14741.9080176211. The cubic root of 217323852 is about 601.2232931171.

The spelling of 217323852 in words is "two hundred seventeen million, three hundred twenty-three thousand, eight hundred fifty-two".