81342641 is an odd 8-digits composite number following 81342640
and preceding 81342642 . In scientific notation, it is written as 8.1342641 × 10^7.
The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors.
There are 79880080 positive integers (up to 81342641) that are relatively prime to 81342641.
81342641 has 8 divisors, whose sum is 82814400
The reverse of 81342641 is 14624318
Previous prime number is 269
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
eighty-one million three hundred forty-two thousand six hundred forty-one
Scientific notation
8.1342641 × 10^7
Engineering notation
8.1342641 × 10^6
Prime Factorization
71 × 269 × 4259
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81342641
Product of the distinct prime numbers
The prime factorization of 81342641 is 71 × 269 × 4259.
Since it has a total of 3 prime factors.
8 , 3 , 47 , 54 , 175 , 947 , 6164 , 1494 , 45015 , 86604 , 622383 , 289543 , 2454236 , 1297280 , 82046379 , 6974363 , 55015500 , 975751170 , 4909144079 , 6971097650
n×2
162685282
n×3
244027923
n×4
325370564
n×5
406713205
n÷2
40671320.5
n÷3
27114213.666667
n÷3
20335660.25
n÷5
16268528.2
n2
6616625244854881
n3
5.3821377192377E+23
n4
4.3779729630851E+31
n5
3.5611588304394E+39
2 √n
9019.0155227719
3 √n
433.28410400641
4 √n
94.968497528243
5 √n
38.200025582577
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
-81342640
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 81342641 can be divided by 8 positive divisors.
The sum of these divisors (counting 81342641) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110010011000010110001
3
Ternary
12200001122010102
4
Quaternary
10312103002301
5
Quinary
131310431031
6
Senary
12023242145
8
Octal
466230261
10
Decimal
81342641
12
Duodecimal
232a9355
16
Hexadecimal
4d930b1
20
Vigesimal
1587gc1
36
Base36
1cfgdt
md5
4f6ef10ecadd37b81a3a40027261ae7e
sha1
04279264efc228a4f031da1a68b66b4b245eaee9
sha256
ee563862f0f493a23964ae3de5b46da31938d7fcbd4fd7e31b6ea0a336c1712f
sha512
804240bfd54e870ce54bf99bfc50f3328a6f629829d0ce091232516e7de5873f1b67bc7ae0b1018becc2b0f09fd545fd08f81abeb8f63b1ef98f34693db85f2e
ripemd-160
2209e5f754c01a4ca58f7c24cafd8816fdf7e3df
Diameter
162685282
Circumference
511090886.77838
Area
2.0786741260793E+16
Volume
2.2544645759154E+24
Surface area
8.3146965043171E+16
Circumference
511090886.77838
Perimeter
325370564
Area
6616625244854881
Diagonal
115035866.10145
Surface area
39699751469129286
Volume
5.3821377192377E+23
Space diagonal
140889587.03384
Perimeter
244027923
Area
2.8650827746829E+15
Altitude
70444793.516918
Surface area
2.8650827746829E+15
Volume
6.3429101309214E+22
Height
38345288.700482