20112304320 has 448 divisors, whose sum is σ = 72999843840. Its totient is φ = 5210689536.

The previous prime is 20112304319. The next prime is 20112304321. The reversal of 20112304320 is 2340321102.

20112304320 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 230 + 432 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (20112304319) and next prime (20112304321).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20112304293 and 20112304302.

It is not an unprimeable number, because it can be changed into a prime (20112304321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76472509 + ... + 76472771.

It is an arithmetic number, because the mean of its divisors is an integer number (162946080).

Almost surely, 2^20112304320 is an apocalyptic number.

20112304320 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 20112304320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36499921920).

20112304320 is an abundant number, since it is smaller than the sum of its proper divisors (52887539520).

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

20112304320 is a wasteful number, since it uses less digits than its factorization.

20112304320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20112304320 its reverse (2340321102), we get a palindrome (22452625422).

The spelling of 20112304320 in words is "twenty billion, one hundred twelve million, three hundred four thousand, three hundred twenty".