320830816 has 24 divisors (see below), whose sum is σ = 632824920. Its totient is φ = 160113408.

The previous prime is 320830759. The next prime is 320830819. The reversal of 320830816 is 618038023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320830819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8340 + ... + 26668.

It is an arithmetic number, because the mean of its divisors is an integer number (26367705).

Almost surely, 2^320830816 is an apocalyptic number.

It is an amenable number.

320830816 is a deficient number, since it is larger than the sum of its proper divisors (311994104).

320830816 is a wasteful number, since it uses less digits than its factorization.

320830816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18886 (or 18878 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 320830816 is about 17911.7507798652. The cubic root of 320830816 is about 684.5818151901.

Adding to 320830816 its reverse (618038023), we get a palindrome (938868839).

The spelling of 320830816 in words is "three hundred twenty million, eight hundred thirty thousand, eight hundred sixteen".