320322672 has 180 divisors, whose sum is σ = 982336680. Its totient is φ = 97134336.

The previous prime is 320322637. The next prime is 320322689. The reversal of 320322672 is 276223023.

It is a super-2 number, since 2×320322672² = 205213228394439168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6043798 + ... + 6043850.

It is an arithmetic number, because the mean of its divisors is an integer number (5457426).

Almost surely, 2^320322672 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 320322672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491168340).

320322672 is an abundant number, since it is smaller than the sum of its proper divisors (662014008).

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

320322672 is a wasteful number, since it uses less digits than its factorization.

320322672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 320322672 is about 17897.5605041581. The cubic root of 320322672 is about 684.2202020066.

Adding to 320322672 its reverse (276223023), we get a palindrome (596545695).

The spelling of 320322672 in words is "three hundred twenty million, three hundred twenty-two thousand, six hundred seventy-two".