16947223 has 4 divisors (see below), whose sum is σ = 17531640. Its totient is φ = 16362808.

The previous prime is 16947209. The next prime is 16947233. The reversal of 16947223 is 32274961.

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 16947223 - 2⁵ = 16947191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16947233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292165 + ... + 292222.

It is an arithmetic number, because the mean of its divisors is an integer number (4382910).

Almost surely, 2^16947223 is an apocalyptic number.

16947223 is a deficient number, since it is larger than the sum of its proper divisors (584417).

16947223 is an equidigital number, since it uses as much as digits as its factorization.

16947223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584416.

The product of its digits is 18144, while the sum is 34.

The square root of 16947223 is about 4116.7004991862. The cubic root of 16947223 is about 256.8617959205.

The spelling of 16947223 in words is "sixteen million, nine hundred forty-seven thousand, two hundred twenty-three".