16730305 has 4 divisors (see below), whose sum is σ = 20076372. Its totient is φ = 13384240.

The previous prime is 16730299. The next prime is 16730323. The reversal of 16730305 is 50303761.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3415104 + 13315201 = 1848^2 + 3649^2 .

It is not a de Polignac number, because 16730305 - 2⁹ = 16729793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16730305.

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, 1673026 + ... + 1673035.

It is an arithmetic number, because the mean of its divisors is an integer number (5019093).

Almost surely, 2^16730305 is an apocalyptic number.

It is an amenable number.

16730305 is a deficient number, since it is larger than the sum of its proper divisors (3346067).

16730305 is an equidigital number, since it uses as much as digits as its factorization.

16730305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346066.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 16730305 is about 4090.2695510198. The cubic root of 16730305 is about 255.7611755835.

The spelling of 16730305 in words is "sixteen million, seven hundred thirty thousand, three hundred five".