20187021 is an odd 8-digits composite number following 20187020
and preceding 20187022 . In scientific notation, it is written as 2.0187021 × 10^7.
The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors.
There are 13458012 positive integers (up to 20187021) that are relatively prime to 20187021.
20187021 has 4 divisors, whose sum is 26916032
The reverse of 20187021 is 12078102
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty million one hundred eighty-seven thousand twenty-one
Scientific notation
2.0187021 × 10^7
Engineering notation
2.0187021 × 10^6
Prime Factorization
3 × 6729007
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20187021
Product of the distinct prime numbers
The prime factorization of 20187021 is 3 × 6729007.
Since it has a total of 2 prime factors.
3 , 3 , 97 , 98 , 307 , 195 , 6582 , 9636 , 34483 , 65014 , 4475 , 846185 , 6897334 , 8401948 , 37474974 , 68873199 , 197447200 , 668933988 , 2221156039 , 2707636614
n×2
40374042
n×3
60561063
n×4
80748084
n×5
100935105
n÷2
10093510.5
n÷3
6729007
n÷3
5046755.25
n÷5
4037404.2
n2
407515816854441
n3
8.2265303526728E+21
n4
1.6606914098654E+29
n5
3.3524412365473E+36
2 √n
4492.9968840408
3 √n
272.28522649854
4 √n
67.029820856398
5 √n
28.90776043466
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20187020
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20187021 can be divided by 4 positive divisors.
The sum of these divisors (counting 20187021) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001101000000011110001101
3
Ternary
1101222121101110
4
Quaternary
1031000132031
5
Quinary
20131441041
6
Senary
2000402233
8
Octal
115003615
10
Decimal
20187021
12
Duodecimal
6916379
16
Hexadecimal
134078d
20
Vigesimal
6637b1
36
Base36
c0oel
md5
8fa5b85f50f86c1e21cc6f2c6d4f4da2
sha1
aefc09cb13a1880171b30715d1edbf3e25863d17
sha256
bb6541f0b46babb563bb31d341c76c80ca75dc27c3decc2d52a573a1d37c1864
sha512
f07e4b6df8b9b56abe7c0ab94f91b547c724c6bc9afee2a01683ec0f9cd68aa78648111d85498c435105e239a63c000b61d16d213469aa662809fe5d8e907e75
ripemd-160
1bc082dec34ef04994e39b8fa333a34b913b17e8
Diameter
40374042
Circumference
126838793.74293
Area
1.2802486964516E+15
Volume
3.4459209760654E+22
Surface area
5.1209947858062E+15
Circumference
126838793.74293
Perimeter
80748084
Area
407515816854441
Diagonal
28548758.88211
Surface area
2445094901126646
Volume
8.2265303526728E+21
Space diagonal
34964946.02546
Perimeter
60561063
Area
1.7645952491996E+14
Altitude
17482473.01273
Surface area
1.7645952491996E+14
Volume
9.6950589966864E+20
Height
9516252.9607035