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2020182020 = 225109926689
BaseRepresentation
bin111100001101001…
…1000100000000100
312012210022212202022
41320122120200010
513114131311040
6532243302312
7101030156333
oct17032304004
95183285668
102020182020
1194738171a
1248467a998
132626c259c
1415242dd1a
15bc54c6b5
hex78698804

2020182020 has 24 divisors (see below), whose sum is σ = 4281307800. Its totient is φ = 800658432.

The previous prime is 2020182019. The next prime is 2020182037. The reversal of 2020182020 is 202810202.

It can be written as a sum of positive squares in 4 ways, for example, as 75724804 + 1944457216 = 8702^2 + 44096^2 .

It is a super-2 number, since 2×20201820202 = 8162270787862560800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2020182020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461165 + ... + 465524.

It is an arithmetic number, because the mean of its divisors is an integer number (178387825).

Almost surely, 22020182020 is an apocalyptic number.

2020182020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020182020 is an abundant number, since it is smaller than the sum of its proper divisors (2261125780).

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

2020182020 is a wasteful number, since it uses less digits than its factorization.

2020182020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926807 (or 926805 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2020182020 is about 44946.4350087969. The cubic root of 2020182020 is about 1264.1448328205.

Adding to 2020182020 its reverse (202810202), we get a palindrome (2222992222).

The spelling of 2020182020 in words is "two billion, twenty million, one hundred eighty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1090 2180 926689 1853378 3706756 4633445 9266890 18533780 101009101 202018202 404036404 505045505 1010091010 2020182020