20444444 has 12 divisors (see below), whose sum is σ = 36384600. Its totient is φ = 10048848.

The previous prime is 20444429. The next prime is 20444471. The reversal of 20444444 is 44444402.

It is a happy number.

20444444 is a modest number, since divided by 4444 gives 2044 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43079 + ... + 43550.

It is an arithmetic number, because the mean of its divisors is an integer number (3032050).

Almost surely, 2^20444444 is an apocalyptic number.

It is an amenable number.

20444444 is a deficient number, since it is larger than the sum of its proper divisors (15940156).

20444444 is a wasteful number, since it uses less digits than its factorization.

20444444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86692 (or 86690 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 20444444 is about 4521.5532729362. The cubic root of 20444444 is about 273.4377266654.

Adding to 20444444 its reverse (44444402), we get a palindrome (64888846).

The spelling of 20444444 in words is "twenty million, four hundred forty-four thousand, four hundred forty-four".