20144444 has 12 divisors (see below), whose sum is σ = 36468600. Its totient is φ = 9724848.

The previous prime is 20144437. The next prime is 20144461. The reversal of 20144444 is 44444102.

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, 86714 + ... + 86945.

It is an arithmetic number, because the mean of its divisors is an integer number (3039050).

Almost surely, 2^20144444 is an apocalyptic number.

It is an amenable number.

20144444 is a deficient number, since it is larger than the sum of its proper divisors (16324156).

20144444 is a wasteful number, since it uses less digits than its factorization.

20144444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173692 (or 173690 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 20144444 is about 4488.2562315447. The cubic root of 20144444 is about 272.0936636773.

Adding to 20144444 its reverse (44444102), we get a palindrome (64588546).

The spelling of 20144444 in words is "twenty million, one hundred forty-four thousand, four hundred forty-four".