20044442 has 8 divisors (see below), whose sum is σ = 32800032. Its totient is φ = 9111100.

The previous prime is 20044397. The next prime is 20044447. The reversal of 20044442 is 24444002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20044447) 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, 455534 + ... + 455577.

It is an arithmetic number, because the mean of its divisors is an integer number (4100004).

Almost surely, 2^20044442 is an apocalyptic number.

20044442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20044442 is a deficient number, since it is larger than the sum of its proper divisors (12755590).

20044442 is a wasteful number, since it uses less digits than its factorization.

20044442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911124.

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

The square root of 20044442 is about 4477.1019644408. The cubic root of 20044442 is about 271.6426698331.

Adding to 20044442 its reverse (24444002), we get a palindrome (44488444).

It can be divided in two parts, 2004 and 4442, that added together give a palindrome (6446).

The spelling of 20044442 in words is "twenty million, forty-four thousand, four hundred forty-two".