320956672 has 18 divisors (see below), whose sum is σ = 640660118. Its totient is φ = 160478208.

The previous prime is 320956667. The next prime is 320956673. The reversal of 320956672 is 276659023.

It can be written as a sum of positive squares in only one way, i.e., 318836736 + 2119936 = 17856^2 + 1456^2 .

It is not an unprimeable number, because it can be changed into a prime (320956673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626613 + ... + 627124.

Almost surely, 2^320956672 is an apocalyptic number.

320956672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320956672 is a deficient number, since it is larger than the sum of its proper divisors (319703446).

320956672 is an equidigital number, since it uses as much as digits as its factorization.

320956672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253753 (or 1253739 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 320956672 is about 17915.2636597958. The cubic root of 320956672 is about 684.6713197524.

The spelling of 320956672 in words is "three hundred twenty million, nine hundred fifty-six thousand, six hundred seventy-two".