16305445 has 8 divisors (see below), whose sum is σ = 21071736. Its totient is φ = 12040896.

The previous prime is 16305437. The next prime is 16305449. The reversal of 16305445 is 54450361.

It is a Cunningham number, because it is equal to 4038²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 2414916 + 13890529 = 1554^2 + 3727^2 .

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 16305445 - 2³ = 16305437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16305449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 125362 + ... + 125491.

It is an arithmetic number, because the mean of its divisors is an integer number (2633967).

Almost surely, 2^16305445 is an apocalyptic number.

It is an amenable number.

16305445 is a deficient number, since it is larger than the sum of its proper divisors (4766291).

16305445 is a wasteful number, since it uses less digits than its factorization.

16305445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250871.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 16305445 is about 4038.0001238237. Note that the first 3 decimals coincide. The cubic root of 16305445 is about 253.5775989279.

The spelling of 16305445 in words is "sixteen million, three hundred five thousand, four hundred forty-five".