328386385 has 8 divisors (see below), whose sum is σ = 394430760. Its totient is φ = 262464384.

The previous prime is 328386361. The next prime is 328386391. The reversal of 328386385 is 583683823.

328386385 = 5726² + 5727² + ... + 5735².

It can be written as a sum of positive squares in 4 ways, for example, as 236667456 + 91718929 = 15384^2 + 9577^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 328386385 - 2¹⁵ = 328353617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24580 + ... + 35509.

It is an arithmetic number, because the mean of its divisors is an integer number (49303845).

Almost surely, 2^328386385 is an apocalyptic number.

It is an amenable number.

328386385 is a deficient number, since it is larger than the sum of its proper divisors (66044375).

328386385 is a wasteful number, since it uses less digits than its factorization.

328386385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61187.

The product of its digits is 829440, while the sum is 46.

The square root of 328386385 is about 18121.4344079049. The cubic root of 328386385 is about 689.9141425062.

The spelling of 328386385 in words is "three hundred twenty-eight million, three hundred eighty-six thousand, three hundred eighty-five".