20044672 has 32 divisors (see below), whose sum is σ = 40239000. Its totient is φ = 9945600.

The previous prime is 20044667. The next prime is 20044679. The reversal of 20044672 is 27644002.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20044679) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 18547 + ... + 19597.

Almost surely, 2^20044672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20044672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20119500).

20044672 is an abundant number, since it is smaller than the sum of its proper divisors (20194328).

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

20044672 is a wasteful number, since it uses less digits than its factorization.

20044672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214 (or 1202 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20044672 is about 4477.1276506260. The cubic root of 20044672 is about 271.6437088173.

Adding to 20044672 its reverse (27644002), we get a palindrome (47688674).

The spelling of 20044672 in words is "twenty million, forty-four thousand, six hundred seventy-two".