20413021032 has 128 divisors (see below), whose sum is σ = 59741136000. Its totient is φ = 6440394240.

The previous prime is 20413020989. The next prime is 20413021039. The reversal of 20413021032 is 23012031402.

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 = 20413020996 and 20413021014.

It is not an unprimeable number, because it can be changed into a prime (20413021039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8095932 + ... + 8098452.

It is an arithmetic number, because the mean of its divisors is an integer number (466727625).

Almost surely, 2^20413021032 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 20413021032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29870568000).

20413021032 is an abundant number, since it is smaller than the sum of its proper divisors (39328114968).

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

20413021032 is a wasteful number, since it uses less digits than its factorization.

20413021032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528 (or 4518 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20413021032 its reverse (23012031402), we get a palindrome (43425052434).

The spelling of 20413021032 in words is "twenty billion, four hundred thirteen million, twenty-one thousand, thirty-two".