16321345 has 16 divisors (see below), whose sum is σ = 20920320. Its totient is φ = 12196800.

The previous prime is 16321303. The next prime is 16321351. The reversal of 16321345 is 54312361.

It is not a de Polignac number, because 16321345 - 2¹⁹ = 15797057 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2680 + ... + 6310.

It is an arithmetic number, because the mean of its divisors is an integer number (1307520).

Almost surely, 2^16321345 is an apocalyptic number.

It is an amenable number.

16321345 is a deficient number, since it is larger than the sum of its proper divisors (4598975).

16321345 is a wasteful number, since it uses less digits than its factorization.

16321345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696.

The product of its digits is 2160, while the sum is 25.

The square root of 16321345 is about 4039.9684404708. The cubic root of 16321345 is about 253.6599962291.

The spelling of 16321345 in words is "sixteen million, three hundred twenty-one thousand, three hundred forty-five".