20202130320 has 80 divisors (see below), whose sum is σ = 63959120640. Its totient is φ = 5272609792.

The previous prime is 20202130309. The next prime is 20202130321. The reversal of 20202130320 is 2303120202.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20202130320.

It is not an unprimeable number, because it can be changed into a prime (20202130321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884205 + ... + 906764.

It is an arithmetic number, because the mean of its divisors is an integer number (799489008).

Almost surely, 2^20202130320 is an apocalyptic number.

20202130320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202130320 is an abundant number, since it is smaller than the sum of its proper divisors (43756990320).

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

20202130320 is a wasteful number, since it uses less digits than its factorization.

20202130320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791032 (or 1791026 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20202130320 its reverse (2303120202), we get a palindrome (22505250522).

The spelling of 20202130320 in words is "twenty billion, two hundred two million, one hundred thirty thousand, three hundred twenty".