81433991 is an odd 8-digits prime number following 81433990
and preceding 81433992 . In scientific notation, it is written as 8.1433991 × 10^7.
The sum of its digits is 38. It has a total of 1 prime factors and 2 positive divisors.
There are 81433990 positive integers (up to 81433991) that are relatively prime to 81433991.
81433991 has 2 divisors, whose sum is 81433992
The reverse of 81433991 is 19933418
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 38 Digital Root 2
Name
eighty-one million four hundred thirty-three thousand nine hundred ninety-one
Scientific notation
8.1433991 × 10^7
Engineering notation
8.1433991 × 10^6
Prime Factorization
81433991
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81433991 Product of the distinct prime numbers
The prime factorization of 81433991 is 81433991.
Since it has a total of 1 prime factors.
10 , 9 , 71 , 75 , 254 , 613 , 747 , 5961 , 6176 , 58517 , 640544 , 440240 , 7760732 , 6812486 , 65624792 , 81751091 , 174106666 , 717503915 , 5706850816 , 3661542890
n×2
162867982
n×3
244301973
n×4
325735964
n×5
407169955
n÷2
40716995.5
n÷3
27144663.666667
n÷3
20358497.75
n÷5
16286798.2
n2
6631494890188081
n3
5.4002909520412E+23
n4
4.3976724478591E+31
n5
3.581200185399E+39
2 √n9024.0784016984
3 √n433.44623994147
4 √n94.995149358788
5 √n38.20860166468
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81433992 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40716996 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9024.0784571057 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999754402 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81433991 can be divided by 2 positive divisors.
The sum of these divisors (counting 81433991) is 81433992, the average is 40716996.
Base
System
Value
2
Binary
100110110101001010110000111
3
Ternary
12200020021102202
4
Quaternary
10312221112013
5
Quinary
131321341431
6
Senary
12025225115
8
Octal
466512607
10
Decimal
81433991
12
Duodecimal
2333219b
16
Hexadecimal
4da9587
20
Vigesimal
158j4jb
36
Base36
1chevb
md5
c49a79b48e9421f4f682847e1e17c63e
sha1
018f0edb8c195ca44ae1272dc4fd018508052162
sha256
e6d8cbeeae9ec38295e2697dc03dba7dbdc90a85fa5d33b7e968503f1fc23cd1
sha512
bceada0c790a44772c8ff87d8dd930d71fc5a2713eddd2536c68c83f0daeb6863639f9323f90b3064eaf54ae7fd22ea2bd78f0d572f3d480f25805c1e0df2a13
ripemd-160
75f14f633866831c87736560ec13c65e123b6ffc
Diameter
162867982
Circumference
511664855.75619
Area
2.0833455629333E+16
Volume
2.2620685842907E+24
Surface area
8.3333822517333E+16
Circumference
511664855.75619
Perimeter
325735964
Area
6631494890188081
Diagonal
115165054.51037
Surface area
39788969341128486
Volume
5.4002909520412E+23
Space diagonal
141047809.87511
Perimeter
244301973
Area
2.8715215199848E+15
Altitude
70523904.937553
Surface area
2.8715215199848E+15
Volume
6.3643039209478E+22
Height
38388351.503456