81884865 is an odd 8-digits composite number following 81884864
and preceding 81884866 . In scientific notation, it is written as 8.1884865 × 10^7.
The sum of its digits is 48. It has a total of 3 prime factors and 8 positive divisors.
There are 43671920 positive integers (up to 81884865) that are relatively prime to 81884865.
81884865 has 8 divisors, whose sum is 131015808
The reverse of 81884865 is 56848818
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 48
Digital Root 3
Name
eighty-one million eight hundred eighty-four thousand eight hundred sixty-five
Scientific notation
8.1884865 × 10^7
Engineering notation
8.1884865 × 10^6
Prime Factorization
3 × 5 × 5458991
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81884865
Product of the distinct prime numbers
The prime factorization of 81884865 is 3 × 5 × 5458991.
Since it has a total of 3 prime factors.
4 , 8 , 34 , 84 , 580 , 882 , 3710 , 1499 , 58824 , 28187 , 854262 , 198293 , 8075080 , 2455616 , 51556304 , 38366136 , 823910336 , 11218331 , 3594762754 , 16452741
n×2
163769730
n×3
245654595
n×4
327539460
n×5
409424325
n÷2
40942432.5
n÷3
27294955
n÷3
20471216.25
n÷5
16376973
n2
6705131116068225
n3
5.4904875624655E+23
n4
4.4958783283666E+31
n5
3.6814438997473E+39
2 √n
9049.0256381557
3 √n
434.24471924053
4 √n
95.126366682197
5 √n
38.250818037388
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81884864
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81884865 can be divided by 8 positive divisors.
The sum of these divisors (counting 81884865) is 1, the average is 0.125.
Base
System
Value
2
Binary
100111000010111011011000001
3
Ternary
12201002011220210
4
Quaternary
10320113123001
5
Quinary
131430303430
6
Senary
12043024333
8
Octal
470273301
10
Decimal
81884865
12
Duodecimal
2350b0a9
16
Hexadecimal
4e176c1
20
Vigesimal
15bfc35
36
Base36
1cr2rl
md5
fdce52b0ca5fb7f818f3309d013ae2fc
sha1
46b9b6506da98ff0689ba7fee1bcbcb42a9f7a83
sha256
24c0dd9c1c90d4a760f8d9569db0fda0c177fc2986cadf865e8891396a3df031
sha512
a5cdea299ad50ac4abc84eb554a926c9f0e32ef100de52c5a486f7396ae8599776530b1c5d98d83ff0b553dc033ccad608bef2e4d1898fb047ca47f101de4b0d
ripemd-160
1e2f23072bb1e051fb3ff2ba6a731b731a2ebd74
Diameter
163769730
Circumference
514497780.64838
Area
2.1064790655596E+16
Volume
2.2998500521157E+24
Surface area
8.4259162622385E+16
Circumference
514497780.64838
Perimeter
327539460
Area
6705131116068225
Diagonal
115802686.63609
Surface area
40230786696409350
Volume
5.4904875624655E+23
Space diagonal
141828746.55092
Perimeter
245654595
Area
2.9034069411103E+15
Altitude
70914373.275459
Surface area
2.9034069411103E+15
Volume
6.4706016457329E+22
Height
38600895.545363