16823219 has 12 divisors (see below), whose sum is σ = 20246400. Its totient is φ = 13921488.

The previous prime is 16823203. The next prime is 16823221. The reversal of 16823219 is 91232861.

It is not a de Polignac number, because 16823219 - 2⁴ = 16823203 is a prime.

It is a super-2 number, since 2×16823219² = 566041395043922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16823249) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4499 + ... + 7340.

It is an arithmetic number, because the mean of its divisors is an integer number (1687200).

Almost surely, 2^16823219 is an apocalyptic number.

16823219 is a deficient number, since it is larger than the sum of its proper divisors (3423181).

16823219 is a wasteful number, since it uses less digits than its factorization.

16823219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11882 (or 11875 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 16823219 is about 4101.6117563709. The cubic root of 16823219 is about 256.2337698227.

The spelling of 16823219 in words is "sixteen million, eight hundred twenty-three thousand, two hundred nineteen".