320880528 has 60 divisors (see below), whose sum is σ = 931291088. Its totient is φ = 106958880.

The previous prime is 320880517. The next prime is 320880551. The reversal of 320880528 is 825088023.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 320880492 and 320880501.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37378 + ... + 45153.

Almost surely, 2^320880528 is an apocalyptic number.

It is an amenable number.

320880528 is an abundant number, since it is smaller than the sum of its proper divisors (610410560).

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

320880528 is an equidigital number, since it uses as much as digits as its factorization.

320880528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82554 (or 82536 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 320880528 is about 17913.1384184905. The cubic root of 320880528 is about 684.6171714921.

The spelling of 320880528 in words is "three hundred twenty million, eight hundred eighty thousand, five hundred twenty-eight".