20044641 has 4 divisors (see below), whose sum is σ = 26726192. Its totient is φ = 13363092.

The previous prime is 20044637. The next prime is 20044657. The reversal of 20044641 is 14644002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20044641 - 2² = 20044637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20044841) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3340771 + ... + 3340776.

It is an arithmetic number, because the mean of its divisors is an integer number (6681548).

Almost surely, 2^20044641 is an apocalyptic number.

It is an amenable number.

20044641 is a deficient number, since it is larger than the sum of its proper divisors (6681551).

20044641 is an equidigital number, since it uses as much as digits as its factorization.

20044641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6681550.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 20044641 is about 4477.1241885836. The cubic root of 20044641 is about 271.6435687807.

Adding to 20044641 its reverse (14644002), we get a palindrome (34688643).

The spelling of 20044641 in words is "twenty million, forty-four thousand, six hundred forty-one".