20044134400 has 72 divisors (see below), whose sum is σ = 49697444160. Its totient is φ = 8017633280.

The previous prime is 20044134391. The next prime is 20044134401. The reversal of 20044134400 is 443144002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20044134401) 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 5 ways as a sum of consecutive naturals, for example, 144544 + ... + 246943.

It is an arithmetic number, because the mean of its divisors is an integer number (690242280).

Almost surely, 2^20044134400 is an apocalyptic number.

20044134400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20044134400 is an abundant number, since it is smaller than the sum of its proper divisors (29653309760).

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

20044134400 is an equidigital number, since it uses as much as digits as its factorization.

20044134400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391519 (or 391494 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20044134400 its reverse (443144002), we get a palindrome (20487278402).

The spelling of 20044134400 in words is "twenty billion, forty-four million, one hundred thirty-four thousand, four hundred".