326720160 has 288 divisors, whose sum is σ = 1241630208. Its totient is φ = 77690880.

The previous prime is 326720099. The next prime is 326720183. The reversal of 326720160 is 61027623.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 580039 + ... + 580601.

It is an arithmetic number, because the mean of its divisors is an integer number (4311216).

Almost surely, 2^326720160 is an apocalyptic number.

326720160 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326720160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620815104).

326720160 is an abundant number, since it is smaller than the sum of its proper divisors (914910048).

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

326720160 is a wasteful number, since it uses less digits than its factorization.

326720160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 326720160 is about 18075.4020702169. The cubic root of 326720160 is about 688.7452938459.

Adding to 326720160 its reverse (61027623), we get a palindrome (387747783).

The spelling of 326720160 in words is "three hundred twenty-six million, seven hundred twenty thousand, one hundred sixty".