16678222 has 8 divisors (see below), whose sum is σ = 27291672. Its totient is φ = 7581000.

The previous prime is 16678213. The next prime is 16678223. The reversal of 16678222 is 22287661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16678223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379029 + ... + 379072.

It is an arithmetic number, because the mean of its divisors is an integer number (3411459).

Almost surely, 2^16678222 is an apocalyptic number.

16678222 is a deficient number, since it is larger than the sum of its proper divisors (10613450).

16678222 is a wasteful number, since it uses less digits than its factorization.

16678222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758114.

The product of its digits is 16128, while the sum is 34.

The square root of 16678222 is about 4083.8978929449. The cubic root of 16678222 is about 255.4954968997.

It can be divided in two parts, 16678 and 222, that added together give a square (16900 = 130²).

The spelling of 16678222 in words is "sixteen million, six hundred seventy-eight thousand, two hundred twenty-two".