320612072 has 32 divisors (see below), whose sum is σ = 656657280. Its totient is φ = 145541760.

The previous prime is 320612069. The next prime is 320612093. The reversal of 320612072 is 270216023.

It is an unprimeable number.

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, 81953 + ... + 85775.

It is an arithmetic number, because the mean of its divisors is an integer number (20520540).

Almost surely, 2^320612072 is an apocalyptic number.

It is an amenable number.

320612072 is an abundant number, since it is smaller than the sum of its proper divisors (336045208).

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

320612072 is a wasteful number, since it uses less digits than its factorization.

320612072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4793 (or 4789 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 320612072 is about 17905.6435796092. The cubic root of 320612072 is about 684.4261960881.

Adding to 320612072 its reverse (270216023), we get a palindrome (590828095).

The spelling of 320612072 in words is "three hundred twenty million, six hundred twelve thousand, seventy-two".