Search a number
-
+
2020204220 = 225199507589
BaseRepresentation
bin111100001101001…
…1101111010111100
312012210101000012112
41320122131322330
513114133013340
6532243553152
7101030311136
oct17032357274
95183330175
102020204220
11947397371
1248468b7b8
132626cc718
14152438056
15bc554065
hex7869debc

2020204220 has 24 divisors (see below), whose sum is σ = 4263756000. Its totient is φ = 804019392.

The previous prime is 2020204201. The next prime is 2020204223. The reversal of 2020204220 is 224020202.

It is a junction number, because it is equal to n+sod(n) for n = 2020204195 and 2020204204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020204223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 249815 + ... + 257774.

It is an arithmetic number, because the mean of its divisors is an integer number (177656500).

Almost surely, 22020204220 is an apocalyptic number.

2020204220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020204220 is an abundant number, since it is smaller than the sum of its proper divisors (2243551780).

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

2020204220 is a wasteful number, since it uses less digits than its factorization.

2020204220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507797 (or 507795 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 2020204220 is about 44946.6819687505. The cubic root of 2020204220 is about 1264.1494634119.

Adding to 2020204220 its reverse (224020202), we get a palindrome (2244224422).

The spelling of 2020204220 in words is "two billion, twenty million, two hundred four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 199 398 796 995 1990 3980 507589 1015178 2030356 2537945 5075890 10151780 101010211 202020422 404040844 505051055 1010102110 2020204220