1328329 has 4 divisors (see below), whose sum is σ = 1406484. Its totient is φ = 1250176.

The previous prime is 1328323. The next prime is 1328351. The reversal of 1328329 is 9238231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1000000 + 328329 = 1000^2 + 573^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328329 - 2⁵ = 1328297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1328297 and 1328306.

It is not an unprimeable number, because it can be changed into a prime (1328323) 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, 39052 + ... + 39085.

It is an arithmetic number, because the mean of its divisors is an integer number (351621).

2^1328329 is an apocalyptic number.

It is an amenable number.

1328329 is a deficient number, since it is larger than the sum of its proper divisors (78155).

1328329 is an equidigital number, since it uses as much as digits as its factorization.

1328329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78154.

The product of its digits is 2592, while the sum is 28.

The square root of 1328329 is about 1152.5315613900. The cubic root of 1328329 is about 109.9263694578.

The spelling of 1328329 in words is "one million, three hundred twenty-eight thousand, three hundred twenty-nine".