320120528 has 100 divisors (see below), whose sum is σ = 780437028. Its totient is φ = 126443520.

The previous prime is 320120527. The next prime is 320120543. The reversal of 320120528 is 825021023.

It can be written as a sum of positive squares in 2 ways, for example, as 172449424 + 147671104 = 13132^2 + 12152^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320120527) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 499088 + ... + 499728.

Almost surely, 2^320120528 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 320120528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390218514).

320120528 is an abundant number, since it is smaller than the sum of its proper divisors (460316500).

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

320120528 is an equidigital number, since it uses as much as digits as its factorization.

320120528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 320120528 is about 17891.9123628527. The cubic root of 320120528 is about 684.0762428834.

The spelling of 320120528 in words is "three hundred twenty million, one hundred twenty thousand, five hundred twenty-eight".