320972 has 12 divisors (see below), whose sum is σ = 581280. Its totient is φ = 154896.

The previous prime is 320953. The next prime is 321007. The reversal of 320972 is 279023.

It is an unprimeable number.

320972 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268 + ... + 1499.

It is an arithmetic number, because the mean of its divisors is an integer number (48440).

2³²⁰⁹⁷² is an apocalyptic number.

It is an amenable number.

320972 is a deficient number, since it is larger than the sum of its proper divisors (260308).

320972 is a wasteful number, since it uses less digits than its factorization.

320972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800 (or 2798 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 320972 is about 566.5439082719. The cubic root of 320972 is about 68.4682218913.

Adding to 320972 its reverse (279023), we get a palindrome (599995).

The spelling of 320972 in words is "three hundred twenty thousand, nine hundred seventy-two".