81301901 is an odd 8-digits composite number following 81301900
and preceding 81301902 . In scientific notation, it is written as 8.1301901 × 10^7.
The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors.
There are 80289792 positive integers (up to 81301901) that are relatively prime to 81301901.
81301901 has 8 divisors, whose sum is 82319160
The reverse of 81301901 is 10910318
Previous prime number is 353
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
eighty-one million three hundred one thousand nine hundred one
Scientific notation
8.1301901 × 10^7
Engineering notation
8.1301901 × 10^6
Prime Factorization
109 × 353 × 2113
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81301901
Product of the distinct prime numbers
The prime factorization of 81301901 is 109 × 353 × 2113.
Since it has a total of 3 prime factors.
3 , 9 , 61 , 27 , 805 , 514 , 8529 , 130 , 48989 , 46314 , 152095 , 669964 , 3046250 , 6473533 , 44305443 , 75869378 , 272043959 , 840423856 , 4853731066 , 4309867828
n×2
162603802
n×3
243905703
n×4
325207604
n×5
406509505
n÷2
40650950.5
n÷3
27100633.666667
n÷3
20325475.25
n÷5
16260380.2
n2
6609999106213801
n3
5.3740549294348E+23
n4
4.3692088184147E+31
n5
3.5522498280308E+39
2 √n
9016.7566785402
3 √n
433.21175596538
4 √n
94.956604186019
5 √n
38.19619836257
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
-81301900
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 81301901 can be divided by 8 positive divisors.
The sum of these divisors (counting 81301901) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110001001000110001101
3
Ternary
12122222120020112
4
Quaternary
10312021012031
5
Quinary
131303130101
6
Senary
12022325405
8
Octal
466110615
10
Decimal
81301901
12
Duodecimal
23289865
16
Hexadecimal
4d8918d
20
Vigesimal
1582ef1
36
Base36
1ceky5
md5
1e2967261e00869d9a267847b18aa13b
sha1
c6bafac74a19418d35efd85844649ef2e73d7d3e
sha256
4867d1e657550d2147963f80f93d05e89087f3cf2ece8e8c26a50c3f0894c3ec
sha512
cb8c731da574f59e24c10551c39d327d5ebffcb35a2e9f138ddd785b793ad686d60cc19be51d86a96a61b10139c0437965af88ece65f203eb689218898ea73ad
ripemd-160
9f93358d64250bbd7d67836c2df30dc9ecb4e216
Diameter
162603802
Circumference
510834909.80897
Area
2.0765924632316E+16
Volume
2.2510788648401E+24
Surface area
8.3063698529266E+16
Circumference
510834909.80897
Perimeter
325207604
Area
6609999106213801
Diagonal
114978251.04091
Surface area
39659994637282806
Volume
5.3740549294348E+23
Space diagonal
140819023.28393
Perimeter
243905703
Area
2.8622135724868E+15
Altitude
70409511.641967
Surface area
2.8622135724868E+15
Volume
6.3333844717873E+22
Height
38326083.680305