328225520 has 240 divisors, whose sum is σ = 954010368. Its totient is φ = 104509440.

The previous prime is 328225519. The next prime is 328225523. The reversal of 328225520 is 25522823.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328225523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4496204 + ... + 4496276.

Almost surely, 2^328225520 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 328225520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477005184).

328225520 is an abundant number, since it is smaller than the sum of its proper divisors (625784848).

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

328225520 is a wasteful number, since it uses less digits than its factorization.

328225520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 328225520 is about 18116.9953358718. The cubic root of 328225520 is about 689.8014691730.

The spelling of 328225520 in words is "three hundred twenty-eight million, two hundred twenty-five thousand, five hundred twenty".