16809433 has 8 divisors (see below), whose sum is σ = 18173120. Its totient is φ = 15493680.

The previous prime is 16809407. The next prime is 16809437. The reversal of 16809433 is 33490861.

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 16809433 - 2⁹ = 16808921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16809437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11253 + ... + 12658.

It is an arithmetic number, because the mean of its divisors is an integer number (2271640).

Almost surely, 2^16809433 is an apocalyptic number.

It is an amenable number.

16809433 is a deficient number, since it is larger than the sum of its proper divisors (1363687).

16809433 is a wasteful number, since it uses less digits than its factorization.

16809433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23967.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 16809433 is about 4099.9308530755. The cubic root of 16809433 is about 256.1637593590.

The spelling of 16809433 in words is "sixteen million, eight hundred nine thousand, four hundred thirty-three".