20044430 has 48 divisors (see below), whose sum is σ = 44200080. Its totient is φ = 6507648.

The previous prime is 20044397. The next prime is 20044447. The reversal of 20044430 is 3444002.

It is a junction number, because it is equal to n+sod(n) for n = 20044399 and 20044408.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 8234 + ... + 10386.

It is an arithmetic number, because the mean of its divisors is an integer number (920835).

Almost surely, 2^20044430 is an apocalyptic number.

20044430 is an abundant number, since it is smaller than the sum of its proper divisors (24155650).

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

20044430 is a wasteful number, since it uses less digits than its factorization.

20044430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193 (or 2186 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20044430 is about 4477.1006242880. The cubic root of 20044430 is about 271.6426156250.

Adding to 20044430 its reverse (3444002), we get a palindrome (23488432).

The spelling of 20044430 in words is "twenty million, forty-four thousand, four hundred thirty".