16722226 has 8 divisors (see below), whose sum is σ = 25129584. Its totient is φ = 8345700.

The previous prime is 16722191. The next prime is 16722229. The reversal of 16722226 is 62222761.

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

It is a junction number, because it is equal to n+sod(n) for n = 16722194 and 16722203.

It is not an unprimeable number, because it can be changed into a prime (16722229) 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, 6300 + ... + 8551.

It is an arithmetic number, because the mean of its divisors is an integer number (3141198).

Almost surely, 2^16722226 is an apocalyptic number.

16722226 is a deficient number, since it is larger than the sum of its proper divisors (8407358).

16722226 is a wasteful number, since it uses less digits than its factorization.

16722226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15416.

The product of its digits is 4032, while the sum is 28.

The square root of 16722226 is about 4089.2818440406. The cubic root of 16722226 is about 255.7200002587.

Adding to 16722226 its reverse (62222761), we get a palindrome (78944987).

The spelling of 16722226 in words is "sixteen million, seven hundred twenty-two thousand, two hundred twenty-six".