20303033432 has 128 divisors (see below), whose sum is σ = 44033932800. Its totient is φ = 8686233600.

The previous prime is 20303033341. The next prime is 20303033437. The reversal of 20303033432 is 23433030302.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 20303033398 and 20303033407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303033437) 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 31 ways as a sum of consecutive naturals, for example, 52192694 + ... + 52193082.

It is an arithmetic number, because the mean of its divisors is an integer number (344015100).

Almost surely, 2^20303033432 is an apocalyptic number.

20303033432 is a gapful number since it is divisible by the number (22) 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 20303033432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22016966400).

20303033432 is an abundant number, since it is smaller than the sum of its proper divisors (23730899368).

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

20303033432 is a wasteful number, since it uses less digits than its factorization.

20303033432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 23.

Adding to 20303033432 its reverse (23433030302), we get a palindrome (43736063734).

The spelling of 20303033432 in words is "twenty billion, three hundred three million, thirty-three thousand, four hundred thirty-two".