20131261 is an odd 8-digits composite number following 20131260
and preceding 20131262 . In scientific notation, it is written as 2.0131261 × 10^7.
The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors.
There are 20120832 positive integers (up to 20131261) that are relatively prime to 20131261.
20131261 has 4 divisors, whose sum is 20141692
The reverse of 20131261 is 16213102
Previous prime number is 7873
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 16
Digital Root 7
Name
twenty million one hundred thirty-one thousand two hundred sixty-one
Scientific notation
2.0131261 × 10^7
Engineering notation
2.0131261 × 10^6
Prime Factorization
7873 × 2557
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20131261
Product of the distinct prime numbers
The prime factorization of 20131261 is 7873 × 2557.
Since it has a total of 2 prime factors.
9 , 3 , 90 , 44 , 123 , 119 , 3985 , 8245 , 17485 , 22054 , 168749 , 427135 , 6734848 , 4606274 , 93374850 , 16459597 , 478403809 , 218204303 , 140507615 , 6849087035
n×2
40262522
n×3
60393783
n×4
80525044
n×5
100656305
n÷2
10065630.5
n÷3
6710420.3333333
n÷3
5032815.25
n÷5
4026252.2
n2
405267669450121
n3
8.1585492285621E+21
n4
1.6424188390153E+29
n5
3.3063962319534E+36
2 √n
4486.7873807436
3 √n
272.03429588458
4 √n
66.983485880802
5 √n
28.891773126649
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
-20131260
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 20131261 can be divided by 4 positive divisors.
The sum of these divisors (counting 20131261) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110010110110111101
3
Ternary
1101212202220021
4
Quaternary
1030302312331
5
Quinary
20123200021
6
Senary
1555252141
8
Octal
114626675
10
Decimal
20131261
12
Duodecimal
68aa051
16
Hexadecimal
1332dbd
20
Vigesimal
65g831
36
Base36
bzhdp
md5
22ef4b1e9633741e06dc3ed02426ae77
sha1
f6c2d0fec117cf8ab0655c5a103d86f2624bc622
sha256
9a6bd7991e468edba002f7bb2fe5b4ce5feda3443c2ac485ff67f0022976e05b
sha512
615dd9c747f2fc755c8313d9ce7dd4815d2f4ef024af17e43e6a8618889c859b8692c73e2eb7c4a53819e8823696ef0c77c0afd15a8c3a2b4107bc79afde1dac
ripemd-160
13ea69636af5224b375abf293da9166b57c18553
Diameter
40262522
Circumference
126488443.3302
Area
1.273185933082E+15
Volume
3.4174451093869E+22
Surface area
5.0927437323278E+15
Circumference
126488443.3302
Perimeter
80525044
Area
405267669450121
Diagonal
28469902.333873
Surface area
2431606016700726
Volume
8.1585492285621E+21
Space diagonal
34868366.87243
Perimeter
60393783
Area
1.7548604853816E+14
Altitude
17434183.436215
Surface area
1.7548604853816E+14
Volume
9.6149424736009E+20
Height
9489967.4446242