20443003000 has 128 divisors (see below), whose sum is σ = 55072068480. Its totient is φ = 6957542400.

The previous prime is 20443002847. The next prime is 20443003019. The reversal of 20443003000 is 30034402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 948342 + ... + 969658.

It is an arithmetic number, because the mean of its divisors is an integer number (430250535).

Almost surely, 2^20443003000 is an apocalyptic number.

20443003000 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 20443003000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27536034240).

20443003000 is an abundant number, since it is smaller than the sum of its proper divisors (34629065480).

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

20443003000 is a wasteful number, since it uses less digits than its factorization.

20443003000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21482 (or 21468 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 20443003000 its reverse (30034402), we get a palindrome (20473037402).

The spelling of 20443003000 in words is "twenty billion, four hundred forty-three million, three thousand".