1328345 has 8 divisors (see below), whose sum is σ = 1649160. Its totient is φ = 1025920.

The previous prime is 1328323. The next prime is 1328351. The reversal of 1328345 is 5438231.

It can be written as a sum of positive squares in 4 ways, for example, as 80656 + 1247689 = 284^2 + 1117^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1328345 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, 4436 + ... + 4725.

It is an arithmetic number, because the mean of its divisors is an integer number (206145).

2^1328345 is an apocalyptic number.

It is an amenable number.

1328345 is a deficient number, since it is larger than the sum of its proper divisors (320815).

1328345 is an equidigital number, since it uses as much as digits as its factorization.

1328345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9195.

The product of its digits is 2880, while the sum is 26.

The square root of 1328345 is about 1152.5385026107. The cubic root of 1328345 is about 109.9268108181.

The spelling of 1328345 in words is "one million, three hundred twenty-eight thousand, three hundred forty-five".