320756672 has 28 divisors (see below), whose sum is σ = 637510536. Its totient is φ = 160124160.

The previous prime is 320756647. The next prime is 320756707. The reversal of 320756672 is 276657023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40598 + ... + 47850.

Almost surely, 2^320756672 is an apocalyptic number.

320756672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320756672 is a deficient number, since it is larger than the sum of its proper divisors (316753864).

320756672 is an equidigital number, since it uses as much as digits as its factorization.

320756672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7956 (or 7946 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 320756672 is about 17909.6809575157. The cubic root of 320756672 is about 684.5290755091.

The spelling of 320756672 in words is "three hundred twenty million, seven hundred fifty-six thousand, six hundred seventy-two".