328715520 has 216 divisors, whose sum is σ = 1221935904. Its totient is φ = 75091968.

The previous prime is 328715507. The next prime is 328715533. The reversal of 328715520 is 25517823.

It is an interprime number because it is at equal distance from previous prime (328715507) and next prime (328715533).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187287 + ... + 189033.

Almost surely, 2^328715520 is an apocalyptic number.

328715520 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 328715520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610967952).

328715520 is an abundant number, since it is smaller than the sum of its proper divisors (893220384).

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

328715520 is a wasteful number, since it uses less digits than its factorization.

328715520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785 (or 1764 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 328715520 is about 18130.5135062413. The cubic root of 328715520 is about 690.1445611834.

The spelling of 328715520 in words is "three hundred twenty-eight million, seven hundred fifteen thousand, five hundred twenty".