16304705 has 8 divisors (see below), whose sum is σ = 19666152. Its totient is φ = 12976768.

The previous prime is 16304689. The next prime is 16304713. The reversal of 16304705 is 50740361.

It can be written as a sum of positive squares in 4 ways, for example, as 10549504 + 5755201 = 3248^2 + 2399^2 .

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 16304705 - 2⁴ = 16304689 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 7292 + ... + 9261.

It is an arithmetic number, because the mean of its divisors is an integer number (2458269).

Almost surely, 2^16304705 is an apocalyptic number.

It is an amenable number.

16304705 is a deficient number, since it is larger than the sum of its proper divisors (3361447).

16304705 is a wasteful number, since it uses less digits than its factorization.

16304705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16755.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 16304705 is about 4037.9084932673. The cubic root of 16304705 is about 253.5737627807.

The spelling of 16304705 in words is "sixteen million, three hundred four thousand, seven hundred five".