328765320 has 96 divisors (see below), whose sum is σ = 1150695000. Its totient is φ = 80925696.

The previous prime is 328765319. The next prime is 328765321. The reversal of 328765320 is 23567823.

328765320 is a `hidden beast` number, since 328 + 7 + 6 + 5 + 320 = 666.

It is an interprime number because it is at equal distance from previous prime (328765319) and next prime (328765321).

It can be written as a sum of positive squares in 4 ways, for example, as 110376036 + 218389284 = 10506^2 + 14778^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328765321) by changing a digit.

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, 30445 + ... + 39804.

Almost surely, 2^328765320 is an apocalyptic number.

328765320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328765320 is an abundant number, since it is smaller than the sum of its proper divisors (821929680).

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

328765320 is a wasteful number, since it uses less digits than its factorization.

328765320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70279 (or 70272 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 328765320 is about 18131.8868295608. The cubic root of 328765320 is about 690.1794114430.

The spelling of 328765320 in words is "three hundred twenty-eight million, seven hundred sixty-five thousand, three hundred twenty".