320322880 has 56 divisors (see below), whose sum is σ = 772485120. Its totient is φ = 126497280.

The previous prime is 320322811. The next prime is 320322883. The reversal of 320322880 is 88223023.

320322880 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 (320322883) 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, 18945 + ... + 31615.

Almost surely, 2^320322880 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 320322880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386242560).

320322880 is an abundant number, since it is smaller than the sum of its proper divisors (452162240).

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

320322880 is a wasteful number, since it uses less digits than its factorization.

320322880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12767 (or 12757 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 320322880 is about 17897.5663150050. The cubic root of 320322880 is about 684.2203501050.

The spelling of 320322880 in words is "three hundred twenty million, three hundred twenty-two thousand, eight hundred eighty".