328506403 has 8 divisors (see below), whose sum is σ = 340134480. Its totient is φ = 316898400.

The previous prime is 328506397. The next prime is 328506407. The reversal of 328506403 is 304605823.

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 328506403 - 2¹³ = 328498211 is a prime.

It is a super-3 number, since 3×328506403³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328506407) 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 7 ways as a sum of consecutive naturals, for example, 33376 + ... + 42082.

It is an arithmetic number, because the mean of its divisors is an integer number (42516810).

Almost surely, 2^328506403 is an apocalyptic number.

328506403 is a deficient number, since it is larger than the sum of its proper divisors (11628077).

328506403 is a wasteful number, since it uses less digits than its factorization.

328506403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10037.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 328506403 is about 18124.7455982146. The cubic root of 328506403 is about 689.9981817497.

The spelling of 328506403 in words is "three hundred twenty-eight million, five hundred six thousand, four hundred three".