13328345 has 4 divisors (see below), whose sum is σ = 15994020. Its totient is φ = 10662672.

The previous prime is 13328309. The next prime is 13328353. The reversal of 13328345 is 54382331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54382331 = 379 ⋅143489.

It can be written as a sum of positive squares in 2 ways, for example, as 6692569 + 6635776 = 2587^2 + 2576^2 .

It is a cyclic number.

It is not a de Polignac number, because 13328345 - 2⁸ = 13328089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332830 + ... + 1332839.

It is an arithmetic number, because the mean of its divisors is an integer number (3998505).

Almost surely, 2^13328345 is an apocalyptic number.

It is an amenable number.

13328345 is a deficient number, since it is larger than the sum of its proper divisors (2665675).

13328345 is an equidigital number, since it uses as much as digits as its factorization.

13328345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665674.

The product of its digits is 8640, while the sum is 29.

The square root of 13328345 is about 3650.8005971293. The cubic root of 13328345 is about 237.0966449950.

The spelling of 13328345 in words is "thirteen million, three hundred twenty-eight thousand, three hundred forty-five".