20044023240 has 128 divisors (see below), whose sum is σ = 60839424000. Its totient is φ = 5282443008.

The previous prime is 20044023221. The next prime is 20044023271. The reversal of 20044023240 is 4232044002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6148731 + ... + 6151989.

It is an arithmetic number, because the mean of its divisors is an integer number (475308000).

Almost surely, 2^20044023240 is an apocalyptic number.

20044023240 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 20044023240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30419712000).

20044023240 is an abundant number, since it is smaller than the sum of its proper divisors (40795400760).

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

20044023240 is a wasteful number, since it uses less digits than its factorization.

20044023240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859 (or 3855 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 20044023240 its reverse (4232044002), we get a palindrome (24276067242).

The spelling of 20044023240 in words is "twenty billion, forty-four million, twenty-three thousand, two hundred forty".