16804135 has 4 divisors (see below), whose sum is σ = 20164968. Its totient is φ = 13443304.

The previous prime is 16804111. The next prime is 16804153. The reversal of 16804135 is 53140861.

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

It is a cyclic number.

It is not a de Polignac number, because 16804135 - 2⁵ = 16804103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1680409 + ... + 1680418.

It is an arithmetic number, because the mean of its divisors is an integer number (5041242).

Almost surely, 2^16804135 is an apocalyptic number.

16804135 is a deficient number, since it is larger than the sum of its proper divisors (3360833).

16804135 is an equidigital number, since it uses as much as digits as its factorization.

16804135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360832.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 16804135 is about 4099.2846936996. The cubic root of 16804135 is about 256.1368439517.

Adding to 16804135 its reverse (53140861), we get a palindrome (69944996).

The spelling of 16804135 in words is "sixteen million, eight hundred four thousand, one hundred thirty-five".