20012444 has 6 divisors (see below), whose sum is σ = 35021784. Its totient is φ = 10006220.

The previous prime is 20012441. The next prime is 20012479. The reversal of 20012444 is 44421002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012441) 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 as a sum of consecutive naturals, namely, 2501552 + ... + 2501559.

It is an arithmetic number, because the mean of its divisors is an integer number (5836964).

Almost surely, 2^20012444 is an apocalyptic number.

It is an amenable number.

20012444 is a deficient number, since it is larger than the sum of its proper divisors (15009340).

20012444 is a wasteful number, since it uses less digits than its factorization.

20012444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003115 (or 5003113 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 20012444 is about 4473.5270201486. The cubic root of 20012444 is about 271.4980470089.

Adding to 20012444 its reverse (44421002), we get a palindrome (64433446).

The spelling of 20012444 in words is "twenty million, twelve thousand, four hundred forty-four".