20000044240 has 80 divisors (see below), whose sum is σ = 51229863936. Its totient is φ = 7200704000.

The previous prime is 20000044189. The next prime is 20000044249. The reversal of 20000044240 is 4244000002.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000044249) 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 15 ways as a sum of consecutive naturals, for example, 23632 + ... + 201391.

Almost surely, 2^20000044240 is an apocalyptic number.

20000044240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20000044240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25614931968).

20000044240 is an abundant number, since it is smaller than the sum of its proper divisors (31229819696).

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

20000044240 is a wasteful number, since it uses less digits than its factorization.

20000044240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225148 (or 225142 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20000044240 its reverse (4244000002), we get a palindrome (24244044242).

The spelling of 20000044240 in words is "twenty billion, forty-four thousand, two hundred forty".