20044224 has 168 divisors, whose sum is σ = 64190880. Its totient is φ = 5947392.

The previous prime is 20044187. The next prime is 20044237. The reversal of 20044224 is 42244002.

20044224 is a `hidden beast` number, since 200 + 442 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20044197 and 20044206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225172 + ... + 225260.

Almost surely, 2^20044224 is an apocalyptic number.

20044224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20044224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32095440).

20044224 is an abundant number, since it is smaller than the sum of its proper divisors (44146656).

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

20044224 is a wasteful number, since it uses less digits than its factorization.

20044224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 20044224 is about 4477.0776182684. The cubic root of 20044224 is about 271.6416850494.

Adding to 20044224 its reverse (42244002), we get a palindrome (62288226).

The spelling of 20044224 in words is "twenty million, forty-four thousand, two hundred twenty-four".