16444224 has 42 divisors (see below), whose sum is σ = 47136050. Its totient is φ = 5481216.

The previous prime is 16444201. The next prime is 16444271. The reversal of 16444224 is 42244461.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11778624 + 4665600 = 3432^2 + 2160^2 .

It is a super-3 number, since 3×16444224³ (a number of 23 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 13699 + ... + 14850.

Almost surely, 2^16444224 is an apocalyptic number.

It is an amenable number.

16444224 is an abundant number, since it is smaller than the sum of its proper divisors (30691826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16444224 is a wasteful number, since it uses less digits than its factorization.

16444224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28567 (or 28554 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 16444224 is about 4055.1478394752. The cubic root of 16444224 is about 254.2949845425.

Adding to 16444224 its reverse (42244461), we get a palindrome (58688685).

The spelling of 16444224 in words is "sixteen million, four hundred forty-four thousand, two hundred twenty-four".