320878968 has 64 divisors (see below), whose sum is σ = 833738400. Its totient is φ = 102789120.

The previous prime is 320878967. The next prime is 320879021. The reversal of 320878968 is 869878023.

It is a self number, because there is not a number n which added to its sum of digits gives 320878968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320878963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166780 + ... + 168692.

Almost surely, 2^320878968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320878968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416869200).

320878968 is an abundant number, since it is smaller than the sum of its proper divisors (512859432).

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

320878968 is a wasteful number, since it uses less digits than its factorization.

320878968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192 (or 2188 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 320878968 is about 17913.0948749790. The cubic root of 320878968 is about 684.6160620402.

The spelling of 320878968 in words is "three hundred twenty million, eight hundred seventy-eight thousand, nine hundred sixty-eight".