328000505 has 16 divisors (see below), whose sum is σ = 450520704. Its totient is φ = 224568960.

The previous prime is 328000501. The next prime is 328000507. The reversal of 328000505 is 505000823.

It is not a de Polignac number, because 328000505 - 2² = 328000501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328000501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17045 + ... + 30765.

It is an arithmetic number, because the mean of its divisors is an integer number (28157544).

Almost surely, 2^328000505 is an apocalyptic number.

328000505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

328000505 is a deficient number, since it is larger than the sum of its proper divisors (122520199).

328000505 is a wasteful number, since it uses less digits than its factorization.

328000505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14416.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 328000505 is about 18110.7842182496. The cubic root of 328000505 is about 689.6438020092.

The spelling of 328000505 in words is "three hundred twenty-eight million, five hundred five", and thus it is an aban number.