320218068 has 12 divisors (see below), whose sum is σ = 747175520. Its totient is φ = 106739352.

The previous prime is 320218061. The next prime is 320218079. The reversal of 320218068 is 860812023.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×320218068² = 205079222147305248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320218061) 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, 13342408 + ... + 13342431.

Almost surely, 2^320218068 is an apocalyptic number.

It is an amenable number.

320218068 is an abundant number, since it is smaller than the sum of its proper divisors (426957452).

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

320218068 is a wasteful number, since it uses less digits than its factorization.

320218068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26684846 (or 26684844 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 320218068 is about 17894.6379678383. The cubic root of 320218068 is about 684.1457146553.

The spelling of 320218068 in words is "three hundred twenty million, two hundred eighteen thousand, sixty-eight".