20440300120 has 64 divisors (see below), whose sum is σ = 48370141440. Its totient is φ = 7763059200.

The previous prime is 20440300099. The next prime is 20440300157. The reversal of 20440300120 is 2100304402.

It is a junction number, because it is equal to n+sod(n) for n = 20440300094 and 20440300103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89791 + ... + 221230.

It is an arithmetic number, because the mean of its divisors is an integer number (755783460).

Almost surely, 2^20440300120 is an apocalyptic number.

20440300120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20440300120 is an abundant number, since it is smaller than the sum of its proper divisors (27929841320).

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

20440300120 is a wasteful number, since it uses less digits than its factorization.

20440300120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311116 (or 311112 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20440300120 its reverse (2100304402), we get a palindrome (22540604522).

The spelling of 20440300120 in words is "twenty billion, four hundred forty million, three hundred thousand, one hundred twenty".