320974540 has 24 divisors (see below), whose sum is σ = 677778192. Its totient is φ = 127679040.

The previous prime is 320974513. The next prime is 320974541. The reversal of 320974540 is 45479023.

It is a junction number, because it is equal to n+sod(n) for n = 320974496 and 320974505.

It is not an unprimeable number, because it can be changed into a prime (320974541) 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, 40714 + ... + 47953.

It is an arithmetic number, because the mean of its divisors is an integer number (28240758).

Almost surely, 2^320974540 is an apocalyptic number.

It is an amenable number.

320974540 is an abundant number, since it is smaller than the sum of its proper divisors (356803652).

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

320974540 is a wasteful number, since it uses less digits than its factorization.

320974540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88857 (or 88855 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 320974540 is about 17915.7623337663. The cubic root of 320974540 is about 684.6840249773.

The spelling of 320974540 in words is "three hundred twenty million, nine hundred seventy-four thousand, five hundred forty".