20003332032 has 84 divisors (see below), whose sum is σ = 57379738936. Its totient is φ = 6662684160.

The previous prime is 20003331991. The next prime is 20003332073. The reversal of 20003332032 is 23023330002.

It is an interprime number because it is at equal distance from previous prime (20003331991) and next prime (20003332073).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20003331996 and 20003332014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 782883 + ... + 808029.

Almost surely, 2^20003332032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20003332032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28689869468).

20003332032 is an abundant number, since it is smaller than the sum of its proper divisors (37376406904).

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

20003332032 is a wasteful number, since it uses less digits than its factorization.

20003332032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26546 (or 26533 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

Adding to 20003332032 its reverse (23023330002), we get a palindrome (43026662034).

The spelling of 20003332032 in words is "twenty billion, three million, three hundred thirty-two thousand, thirty-two".