20044236 has 12 divisors (see below), whose sum is σ = 46769912. Its totient is φ = 6681408.

The previous prime is 20044187. The next prime is 20044237. The reversal of 20044236 is 63244002.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20044237) 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, 835165 + ... + 835188.

Almost surely, 2^20044236 is an apocalyptic number.

It is an amenable number.

20044236 is an abundant number, since it is smaller than the sum of its proper divisors (26725676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20044236 is a wasteful number, since it uses less digits than its factorization.

20044236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670360 (or 1670358 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20044236 is about 4477.0789584281. The cubic root of 20044236 is about 271.6417392579.

Adding to 20044236 its reverse (63244002), we get a palindrome (83288238).

The spelling of 20044236 in words is "twenty million, forty-four thousand, two hundred thirty-six".