16304345 has 4 divisors (see below), whose sum is σ = 19565220. Its totient is φ = 13043472.

The previous prime is 16304317. The next prime is 16304363. The reversal of 16304345 is 54340361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54340361 = 19 ⋅2860019.

It can be written as a sum of positive squares in 2 ways, for example, as 7038409 + 9265936 = 2653^2 + 3044^2 .

It is a cyclic number.

It is not a de Polignac number, because 16304345 - 2⁸ = 16304089 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1630430 + ... + 1630439.

It is an arithmetic number, because the mean of its divisors is an integer number (4891305).

Almost surely, 2^16304345 is an apocalyptic number.

It is an amenable number.

16304345 is a deficient number, since it is larger than the sum of its proper divisors (3260875).

16304345 is an equidigital number, since it uses as much as digits as its factorization.

16304345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260874.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 16304345 is about 4037.8639154880. The cubic root of 16304345 is about 253.5718965049.

The spelling of 16304345 in words is "sixteen million, three hundred four thousand, three hundred forty-five".