20330323220 has 48 divisors (see below), whose sum is σ = 43354217088. Its totient is φ = 8006444160.

The previous prime is 20330323163. The next prime is 20330323271. The reversal of 20330323220 is 2232303302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20330323192 and 20330323201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3831089 + ... + 3836391.

It is an arithmetic number, because the mean of its divisors is an integer number (903212856).

Almost surely, 2^20330323220 is an apocalyptic number.

20330323220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20330323220 is an abundant number, since it is smaller than the sum of its proper divisors (23023893868).

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

20330323220 is a wasteful number, since it uses less digits than its factorization.

20330323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8240 (or 8238 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 20.

Adding to 20330323220 its reverse (2232303302), we get a palindrome (22562626522).

The spelling of 20330323220 in words is "twenty billion, three hundred thirty million, three hundred twenty-three thousand, two hundred twenty".