16224444 has 36 divisors (see below), whose sum is σ = 41185144. Its totient is φ = 5385312.

The previous prime is 16224419. The next prime is 16224449. The reversal of 16224444 is 44442261.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16224449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9159 + ... + 10785.

Almost surely, 2^16224444 is an apocalyptic number.

It is an amenable number.

16224444 is an abundant number, since it is smaller than the sum of its proper divisors (24960700).

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

16224444 is a wasteful number, since it uses less digits than its factorization.

16224444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914 (or 1909 counting only the distinct ones).

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

The square root of 16224444 is about 4027.9577952109. The cubic root of 16224444 is about 253.1570002525.

The spelling of 16224444 in words is "sixteen million, two hundred twenty-four thousand, four hundred forty-four".