20004044240 has 40 divisors (see below), whose sum is σ = 46553353728. Its totient is φ = 7994056320.

The previous prime is 20004044237. The next prime is 20004044243. The reversal of 20004044240 is 4244040002.

It is an interprime number because it is at equal distance from previous prime (20004044237) and next prime (20004044243).

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×20004044240³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004044243) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32576 + ... + 202655.

Almost surely, 2^20004044240 is an apocalyptic number.

20004044240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20004044240 is an abundant number, since it is smaller than the sum of its proper divisors (26549309488).

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

20004044240 is a wasteful number, since it uses less digits than its factorization.

20004044240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236307 (or 236301 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20004044240 its reverse (4244040002), we get a palindrome (24248084242).

The spelling of 20004044240 in words is "twenty billion, four million, forty-four thousand, two hundred forty".