20320210020 has 72 divisors (see below), whose sum is σ = 62539247232. Its totient is φ = 4926109760.

The previous prime is 20320210019. The next prime is 20320210069. The reversal of 20320210020 is 2001202302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20320209978 and 20320210005.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1392204 + ... + 1406723.

It is an arithmetic number, because the mean of its divisors is an integer number (868600656).

Almost surely, 2^20320210020 is an apocalyptic number.

20320210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20320210020 is an abundant number, since it is smaller than the sum of its proper divisors (42219037212).

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

20320210020 is a wasteful number, since it uses less digits than its factorization.

20320210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798961 (or 2798948 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20320210020 its reverse (2001202302), we get a palindrome (22321412322).

The spelling of 20320210020 in words is "twenty billion, three hundred twenty million, two hundred ten thousand, twenty".