16226444 has 12 divisors (see below), whose sum is σ = 30580704. Its totient is φ = 7489104.

The previous prime is 16226429. The next prime is 16226459. The reversal of 16226444 is 44462261.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16226429) and next prime (16226459).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155972 + ... + 156075.

It is an arithmetic number, because the mean of its divisors is an integer number (2548392).

Almost surely, 2^16226444 is an apocalyptic number.

It is an amenable number.

16226444 is a deficient number, since it is larger than the sum of its proper divisors (14354260).

16226444 is a wasteful number, since it uses less digits than its factorization.

16226444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312064 (or 312062 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 16226444 is about 4028.2060523265. The cubic root of 16226444 is about 253.1674021127.

The spelling of 16226444 in words is "sixteen million, two hundred twenty-six thousand, four hundred forty-four".