16722422 has 4 divisors (see below), whose sum is σ = 25083636. Its totient is φ = 8361210.

The previous prime is 16722397. The next prime is 16722427. The reversal of 16722422 is 22422761.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 16722391 and 16722400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16722427) 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 as a sum of consecutive naturals, namely, 4180604 + ... + 4180607.

It is an arithmetic number, because the mean of its divisors is an integer number (6270909).

Almost surely, 2^16722422 is an apocalyptic number.

16722422 is a deficient number, since it is larger than the sum of its proper divisors (8361214).

16722422 is an equidigital number, since it uses as much as digits as its factorization.

16722422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8361213.

The product of its digits is 2688, while the sum is 26.

The square root of 16722422 is about 4089.3058090585. The cubic root of 16722422 is about 255.7209993467.

The spelling of 16722422 in words is "sixteen million, seven hundred twenty-two thousand, four hundred twenty-two".