20302013220 has 48 divisors (see below), whose sum is σ = 58382011968. Its totient is φ = 5267548800.

The previous prime is 20302013203. The next prime is 20302013261. The reversal of 20302013220 is 2231020302.

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 20302013220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4570306 + ... + 4574745.

It is an arithmetic number, because the mean of its divisors is an integer number (1216291916).

Almost surely, 2^20302013220 is an apocalyptic number.

20302013220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20302013220 is an abundant number, since it is smaller than the sum of its proper divisors (38079998748).

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

20302013220 is a wasteful number, since it uses less digits than its factorization.

20302013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9145100 (or 9145098 counting only the distinct ones).

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

Adding to 20302013220 its reverse (2231020302), we get a palindrome (22533033522).

The spelling of 20302013220 in words is "twenty billion, three hundred two million, thirteen thousand, two hundred twenty".