20220320340 has 144 divisors (see below), whose sum is σ = 67251824640. Its totient is φ = 4876919040.

The previous prime is 20220320249. The next prime is 20220320357. The reversal of 20220320340 is 4302302202.

20220320340 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 0 + 320 + 340 = 666.

It is a super-2 number, since 2×20220320340² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 364141 + ... + 415979.

It is an arithmetic number, because the mean of its divisors is an integer number (467026560).

Almost surely, 2^20220320340 is an apocalyptic number.

20220320340 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 20220320340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33625912320).

20220320340 is an abundant number, since it is smaller than the sum of its proper divisors (47031504300).

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

20220320340 is a wasteful number, since it uses less digits than its factorization.

20220320340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52062 (or 52057 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 20220320340 its reverse (4302302202), we get a palindrome (24522622542).

The spelling of 20220320340 in words is "twenty billion, two hundred twenty million, three hundred twenty thousand, three hundred forty".