16444345 has 8 divisors (see below), whose sum is σ = 20003976. Its totient is φ = 12974976.

The previous prime is 16444343. The next prime is 16444349. The reversal of 16444345 is 54344461.

It can be written as a sum of positive squares in 4 ways, for example, as 3136441 + 13307904 = 1771^2 + 3648^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16444345 - 2¹ = 16444343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16444343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22162 + ... + 22891.

It is an arithmetic number, because the mean of its divisors is an integer number (2500497).

Almost surely, 2^16444345 is an apocalyptic number.

It is an amenable number.

16444345 is a deficient number, since it is larger than the sum of its proper divisors (3559631).

16444345 is an equidigital number, since it uses as much as digits as its factorization.

16444345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45131.

The product of its digits is 23040, while the sum is 31.

The square root of 16444345 is about 4055.1627587558. The cubic root of 16444345 is about 254.2956082593.

The spelling of 16444345 in words is "sixteen million, four hundred forty-four thousand, three hundred forty-five".