81131844 is an even 8-digits composite number following 81131843
and preceding 81131845 . In scientific notation, it is written as 8.1131844 × 10^7.
The sum of its digits is 30. It has a total of 5 prime factors and 24 positive divisors.
There are 26585344 positive integers (up to 81131844) that are relatively prime to 81131844.
81131844 has 24 divisors, whose sum is 192517920
The reverse of 81131844 is 44813118
Previous prime number is 3
Is Prime? no Number parity even Number length 8 Sum of Digits 30 Digital Root 3
Name
eighty-one million one hundred thirty-one thousand eight hundred forty-four
Scientific notation
8.1131844 × 10^7
Engineering notation
8.1131844 × 10^6
Prime Factorization
2 × 2 × 59 × 3 × 114593
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
40565922 Product of the distinct prime numbers
The prime factorization of 81131844 is 2 × 2 × 59 × 3 × 114593.
Since it has a total of 5 prime factors.
10 , 6 , 85 , 23 , 741 , 946 , 9899 , 6273 , 65982 , 37302 , 692392 , 261745 , 948101 , 1071728 , 49013604 , 35758226 , 273753967 , 343826406 , 8283636910 , 7489409548
n×2
162263688
n×3
243395532
n×4
324527376
n×5
405659220
n÷2
40565922
n÷3
27043948
n÷3
20282961
n÷5
16226368.8
n2
6582376110840336
n3
5.3404031177402E+23
n4
4.3327675264562E+31
n5
3.5152541904471E+39
2 √n9007.3216884932
3 √n432.9094993332
4 √n94.906910646661
5 √n38.18020618461
1 , 2 , 3 , 4 , 6 , 12 , 59 , 118 , 177 , 236 , 354 , 708 , 114593 , 229186 , 343779 , 458372 , 687558 , 1375116 , 6760987 , 13521974 , 20282961 , 27043948 , 40565922 , 81131844
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-81131843 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81131844 can be divided by 24 positive divisors.
The sum of these divisors (counting 81131844) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
100110101011111100101000100
3
Ternary
12122122220222010
4
Quaternary
10311133211010
5
Quinary
131232204334
6
Senary
12014534220
8
Octal
465374504
10
Decimal
81131844
12
Duodecimal
23207370
16
Hexadecimal
4d5f944
20
Vigesimal
15719c4
36
Base36
1caxqc
md5
734eac563a17736c99045c8eb00b8cab
sha1
7c118c6255941b2cac6632138bf52da9e030d87e
sha256
813290f66fde7f710629c88497b8f128fc2f1a983e5c035afc1dc5beee2ad138
sha512
8d6d4060ae2a2edf21bbba945a14c2a1f6dbf4dfbdf2c8cb62e33cc384fe61591d1c094b2d9d47472587c82acb7ed745c5e2b187a98536188117880f1845ec07
ripemd-160
d85728a8bd4a3b20a418f5a3d1993e69d133f029
Diameter
162263688
Circumference
509766410.16519
Area
2.0679144432981E+16
Volume
2.2369828269201E+24
Surface area
8.2716577731924E+16
Circumference
509766410.16519
Perimeter
324527376
Area
6582376110840336
Diagonal
114737754.12514
Surface area
39494256665042016
Volume
5.3404031177402E+23
Space diagonal
140524475.91975
Perimeter
243395532
Area
2.8502524646258E+15
Altitude
70262237.959876
Surface area
2.8502524646258E+15
Volume
6.2937254313732E+22
Height
38245918.041713