2021985 is an odd 7-digits composite number following 2021984
and preceding 2021986 . In scientific notation, it is written as 2.021985 × 10^6.
The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors.
There are 917280 positive integers (up to 2021985) that are relatively prime to 2021985.
2021985 has 16 divisors, whose sum is 2323200
The reverse of 2021985 is 5891202
Previous prime number is 49
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 27
Digital Root 9
Name
two million twenty-one thousand nine hundred eighty-five
Scientific notation
2.021985 × 10^6
Engineering notation
2.021985 × 10^6
Prime Factorization
15 × 21 × 49 × 131
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
2021985
Product of the distinct prime numbers
The prime factorization of 2021985 is 15 × 21 × 49 × 131.
Since it has a total of 4 prime factors.
5 , 6 , 16 , 19 , 313 , 869 , 2740 , 375 , 21746 , 9391 , 510028 , 79278 , 3139100 , 602912 , 60255619 , 99707103 , 186942552 , 931656624 , 3544929747 , 4864043392
n×2
4043970
n×3
6065955
n×4
8087940
n×5
10109925
n÷2
1010992.5
n÷3
673995
n÷3
505496.25
n÷5
404397
n2
4088423340225
n3
8266730667584846625
n4
1.6715205408897E+25
n5
3.3797894608708E+31
2 √n
1421.9651894473
3 √n
126.45207973138
4 √n
37.708953703959
5 √n
18.245492295769
1 , 15 , 21 , 49 , 131 , 315 , 735 , 1029 , 1965 , 2751 , 6419 , 15435 , 41265 , 96285 , 134799 , 2021985
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-2021984
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 2021985 can be divided by 16 positive divisors.
The sum of these divisors (counting 2021985) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111101101101001100001
3
Ternary
10210201122100
4
Quaternary
13231221201
5
Quinary
1004200420
6
Senary
111201013
8
Octal
7555141
10
Decimal
2021985
12
Duodecimal
816169
16
Hexadecimal
1eda61
20
Vigesimal
ccej5
36
Base36
17c69
md5
37062305dee3952ba4496e1adfd889b1
sha1
bc1534d76a15f5fc1910105731199f01b590a8ba
sha256
b4a4001f6f1221bca7823901ddf2112e188144bb0a05ff929e2d84767ce62c50
sha512
2e9a0c77ac9da07c76fe13a04e1f6ddd9c0910f50a61dce60f5307421ab67ab339c1dead79d6905a0bcbe7abcfba28ed2b2bef44be2d31cb684276447eeb65dc
ripemd-160
0671b9fc379cd6011894a5872a68b80f7a545b52
Diameter
4043970
Circumference
12704506.443338
Area
12844160730416
Volume
3.4627600445987E+19
Surface area
51376642921664
Circumference
12704506.443338
Perimeter
8087940
Area
4088423340225
Diagonal
2859518.609915
Surface area
24530540041350
Volume
8266730667584846625
Space diagonal
3502180.7521422
Perimeter
6065955
Area
1770339237030
Altitude
1751090.3760711
Surface area
1770339237030
Volume
9.7424355221534E+17
Height
953172.86997165