20244143420 has 24 divisors (see below), whose sum is σ = 43050840000. Its totient is φ = 7995154752.

The previous prime is 20244143411. The next prime is 20244143443. The reversal of 20244143420 is 2434144202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20244143420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6404795 + ... + 6407954.

It is an arithmetic number, because the mean of its divisors is an integer number (1793785000).

Almost surely, 2^20244143420 is an apocalyptic number.

20244143420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20244143420 is an abundant number, since it is smaller than the sum of its proper divisors (22806696580).

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

20244143420 is a wasteful number, since it uses less digits than its factorization.

20244143420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12812837 (or 12812835 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20244143420 its reverse (2434144202), we get a palindrome (22678287622).

The spelling of 20244143420 in words is "twenty billion, two hundred forty-four million, one hundred forty-three thousand, four hundred twenty".