320973648 has 40 divisors (see below), whose sum is σ = 865236288. Its totient is φ = 102339072.

The previous prime is 320973641. The next prime is 320973649. The reversal of 320973648 is 846379023.

320973648 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320973641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144265 + ... + 146472.

Almost surely, 2^320973648 is an apocalyptic number.

It is an amenable number.

320973648 is an abundant number, since it is smaller than the sum of its proper divisors (544262640).

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

320973648 is a wasteful number, since it uses less digits than its factorization.

320973648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290771 (or 290765 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 320973648 is about 17915.7374394692. The cubic root of 320973648 is about 684.6833907227.

The spelling of 320973648 in words is "three hundred twenty million, nine hundred seventy-three thousand, six hundred forty-eight".