328403893 has 4 divisors (see below), whose sum is σ = 328466080. Its totient is φ = 328341708.

The previous prime is 328403843. The next prime is 328403921. The reversal of 328403893 is 398304823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 328403893 - 2²⁵ = 294849461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328403843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22353 + ... + 34006.

It is an arithmetic number, because the mean of its divisors is an integer number (82116520).

Almost surely, 2^328403893 is an apocalyptic number.

It is an amenable number.

328403893 is a deficient number, since it is larger than the sum of its proper divisors (62187).

328403893 is an equidigital number, since it uses as much as digits as its factorization.

328403893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62186.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 328403893 is about 18121.9174758081. The cubic root of 328403893 is about 689.9264032684.

The spelling of 328403893 in words is "three hundred twenty-eight million, four hundred three thousand, eight hundred ninety-three".