20042444 has 12 divisors (see below), whose sum is σ = 35469000. Its totient is φ = 9908448.

The previous prime is 20042443. The next prime is 20042459. The reversal of 20042444 is 44424002.

It is a super-2 number, since 2×20042444² = 803399122986272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20042443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27794 + ... + 28505.

It is an arithmetic number, because the mean of its divisors is an integer number (2955750).

Almost surely, 2^20042444 is an apocalyptic number.

It is an amenable number.

20042444 is a deficient number, since it is larger than the sum of its proper divisors (15426556).

20042444 is a wasteful number, since it uses less digits than its factorization.

20042444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56392 (or 56390 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 20042444 is about 4476.8788234662. The cubic root of 20042444 is about 271.6336438881.

Adding to 20042444 its reverse (44424002), we get a palindrome (64466446).

The spelling of 20042444 in words is "twenty million, forty-two thousand, four hundred forty-four".