20202032320 has 56 divisors (see below), whose sum is σ = 48211703424. Its totient is φ = 8063072256.

The previous prime is 20202032317. The next prime is 20202032329. The reversal of 20202032320 is 2323020202.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20202032294 and 20202032303.

It is not an unprimeable number, because it can be changed into a prime (20202032329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77169 + ... + 215311.

Almost surely, 2^20202032320 is an apocalyptic number.

20202032320 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 20202032320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24105851712).

20202032320 is an abundant number, since it is smaller than the sum of its proper divisors (28009671104).

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

20202032320 is a wasteful number, since it uses less digits than its factorization.

20202032320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138617 (or 138607 counting only the distinct ones).

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

Adding to 20202032320 its reverse (2323020202), we get a palindrome (22525052522).

The spelling of 20202032320 in words is "twenty billion, two hundred two million, thirty-two thousand, three hundred twenty".