20013323232 has 288 divisors, whose sum is σ = 64005064704. Its totient is φ = 5452876800.

The previous prime is 20013323191. The next prime is 20013323233. The reversal of 20013323232 is 23232331002.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20013323199 and 20013323208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013323233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10352538 + ... + 10354470.

It is an arithmetic number, because the mean of its divisors is an integer number (222239808).

Almost surely, 2^20013323232 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 20013323232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32002532352).

20013323232 is an abundant number, since it is smaller than the sum of its proper divisors (43991741472).

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

20013323232 is a wasteful number, since it uses less digits than its factorization.

20013323232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062 (or 2047 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20013323232 its reverse (23232331002), we get a palindrome (43245654234).

It can be divided in two parts, 2001 and 3323232, that added together give a palindrome (3325233).

The spelling of 20013323232 in words is "twenty billion, thirteen million, three hundred twenty-three thousand, two hundred thirty-two".