20137991 is an odd 8-digits composite number following 20137990
and preceding 20137992 . In scientific notation, it is written as 2.0137991 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 19807800 positive integers (up to 20137991) that are relatively prime to 20137991.
20137991 has 4 divisors, whose sum is 20468184
The reverse of 20137991 is 19973102
Previous prime number is 61
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty million one hundred thirty-seven thousand nine hundred ninety-one
Scientific notation
2.0137991 × 10^7
Engineering notation
2.0137991 × 10^6
Prime Factorization
61 × 330131
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20137991
Product of the distinct prime numbers
The prime factorization of 20137991 is 61 × 330131.
Since it has a total of 2 prime factors.
2 , 1 , 45 , 63 , 320 , 209 , 3139 , 4904 , 50025 , 59627 , 203562 , 988765 , 7865468 , 8539481 , 25379535 , 52577488 , 310379488 , 512312464 , 4394263389 , 1145625008
n×2
40275982
n×3
60413973
n×4
80551964
n×5
100689955
n÷2
10068995.5
n÷3
6712663.6666667
n÷3
5034497.75
n÷5
4027598.2
n2
405538681516081
n3
8.1667343185227E+21
n4
1.644616222058E+29
n5
3.3119266678258E+36
2 √n
4487.5372978951
3 √n
272.06460673354
4 √n
66.98908342331
5 √n
28.893704606621
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
-20137990
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 20137991 can be divided by 4 positive divisors.
The sum of these divisors (counting 20137991) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110100100000000111
3
Ternary
1101220010010112
4
Quaternary
1030310200013
5
Quinary
20123403431
6
Senary
1555343235
8
Octal
114644007
10
Decimal
20137991
12
Duodecimal
68b1b1b
16
Hexadecimal
1334807
20
Vigesimal
65h4jb
36
Base36
bzmkn
md5
59502fad25916d170bd482d5bb1d6b31
sha1
29d852aeaef6ba56768f23cc1a978ba05aca2a23
sha256
2506373c75404d076c972a390feffb24eabf4bf4352499eadac859045cc5f8dd
sha512
934fcf6a291a5919cc5723b36aafc4cce06bb4a1461d11600a2f0d4972d072a9ce39ece040a188cba5e44480d3b2de4a4c02da1fffb736054bf7dc83f611f774
ripemd-160
d5dedb2815885fe78e5706b172d441902fa34659
Diameter
40275982
Circumference
126530729.16731
Area
1.2740373425974E+15
Volume
3.4208736718521E+22
Surface area
5.0961493703896E+15
Circumference
126530729.16731
Perimeter
80551964
Area
405538681516081
Diagonal
28479419.991147
Surface area
2433232089096486
Volume
8.1667343185227E+21
Space diagonal
34880023.574365
Perimeter
60413973
Area
1.7560340020509E+14
Altitude
17440011.787182
Surface area
1.7560340020509E+14
Volume
9.6245886946272E+20
Height
9493139.9970491