16806219 has 8 divisors (see below), whose sum is σ = 22464720. Its totient is φ = 11175936.

The previous prime is 16806211. The next prime is 16806233. The reversal of 16806219 is 91260861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16806219 - 2³ = 16806211 is a prime.

It is a super-2 number, since 2×16806219² = 564897994151922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16806219.

It is not an unprimeable number, because it can be changed into a prime (16806211) 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, 5622 + ... + 8075.

It is an arithmetic number, because the mean of its divisors is an integer number (2808090).

Almost surely, 2^16806219 is an apocalyptic number.

16806219 is a deficient number, since it is larger than the sum of its proper divisors (5658501).

16806219 is a wasteful number, since it uses less digits than its factorization.

16806219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14109.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 16806219 is about 4099.5388765079. The cubic root of 16806219 is about 256.1474319631.

The spelling of 16806219 in words is "sixteen million, eight hundred six thousand, two hundred nineteen".