20302243320 has 128 divisors (see below), whose sum is σ = 61403961600. Its totient is φ = 5369877504.

The previous prime is 20302243307. The next prime is 20302243343. The reversal of 20302243320 is 2334220302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15823399 + ... + 15824681.

It is an arithmetic number, because the mean of its divisors is an integer number (479718450).

Almost surely, 2^20302243320 is an apocalyptic number.

20302243320 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 20302243320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30701980800).

20302243320 is an abundant number, since it is smaller than the sum of its proper divisors (41101718280).

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

20302243320 is a wasteful number, since it uses less digits than its factorization.

20302243320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2269 (or 2265 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 20302243320 its reverse (2334220302), we get a palindrome (22636463622).

The spelling of 20302243320 in words is "twenty billion, three hundred two million, two hundred forty-three thousand, three hundred twenty".