81121102 is an even 8-digits composite number following 81121101
and preceding 81121103 . In scientific notation, it is written as 8.1121102 × 10^7.
The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors.
There are 40560550 positive integers (up to 81121102) that are relatively prime to 81121102.
81121102 has 4 divisors, whose sum is 121681656
The reverse of 81121102 is 20112118
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 16
Digital Root 7
Name
eighty-one million one hundred twenty-one thousand one hundred two
Scientific notation
8.1121102 × 10^7
Engineering notation
8.1121102 × 10^6
Prime Factorization
2 × 40560551
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81121102
Product of the distinct prime numbers
The prime factorization of 81121102 is 2 × 40560551.
Since it has a total of 2 prime factors.
7 , 8 , 65 , 4 , 758 , 615 , 4596 , 9664 , 50436 , 1771 , 662459 , 3225 , 2985709 , 8873271 , 12267269 , 53829134 , 534997142 , 440140295 , 8296322919 , 8030336253
n×2
162242204
n×3
243363306
n×4
324484408
n×5
405605510
n÷2
40560551
n÷3
27040367.333333
n÷3
20280275.5
n÷5
16224220.4
n2
6580633189694404
n3
5.3382821620579E+23
n4
4.3304733177308E+31
n5
3.5129276771591E+39
2 √n
9006.7253760731
3 √n
432.89039249482
4 √n
94.903769029861
5 √n
38.179195105662
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
-81121101
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 81121102 can be divided by 4 positive divisors.
The sum of these divisors (counting 81121102) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110101011100111101001110
3
Ternary
12122122101020021
4
Quaternary
10311130331032
5
Quinary
131231333402
6
Senary
12014412354
8
Octal
465347516
10
Decimal
81121102
12
Duodecimal
232010ba
16
Hexadecimal
4d5cf4e
20
Vigesimal
15702f2
36
Base36
1capfy
md5
37db93f529d2b5cdef4efa1f5d2352bc
sha1
86d26f5f2a208ba0966abf6e4a72905b903a90b8
sha256
5a21e065ceb6ab30489b425b305bbe34b903deb19678bd8f2392abc1dec3c7cf
sha512
ef30fc2f73db4453c9132df0acc07c90c9609173efd040da36d6c398c9b3ae66c7452d52d157ddfdc90ac278504858f0273068d4a35734325435ac7d06c84d7d
ripemd-160
8d385d44624b44c5ed30b9e6e694d00f4e3b9f21
Diameter
162242204
Circumference
509698916.18862
Area
2.0673668884713E+16
Volume
2.2360944030814E+24
Surface area
8.2694675538852E+16
Circumference
509698916.18862
Perimeter
324484408
Area
6580633189694404
Diagonal
114722562.64305
Surface area
39483799138166424
Volume
5.3382821620579E+23
Space diagonal
140505870.22998
Perimeter
243363306
Area
2.8494977576312E+15
Altitude
70252935.114989
Surface area
2.8494977576312E+15
Volume
6.2912258611305E+22
Height
38240854.21435