16440226 has 8 divisors (see below), whose sum is σ = 26902224. Its totient is φ = 7472820.

The previous prime is 16440223. The next prime is 16440251. The reversal of 16440226 is 62204461.

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

It is a super-3 number, since 3×16440226³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16440226.

It is not an unprimeable number, because it can be changed into a prime (16440223) 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, 373620 + ... + 373663.

It is an arithmetic number, because the mean of its divisors is an integer number (3362778).

Almost surely, 2^16440226 is an apocalyptic number.

16440226 is a deficient number, since it is larger than the sum of its proper divisors (10461998).

16440226 is a wasteful number, since it uses less digits than its factorization.

16440226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747296.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 16440226 is about 4054.6548558416. The cubic root of 16440226 is about 254.2743743929.

Adding to 16440226 its reverse (62204461), we get a palindrome (78644687).

The spelling of 16440226 in words is "sixteen million, four hundred forty thousand, two hundred twenty-six".