81420199 is an odd 8-digits composite number following 81420198
and preceding 81420200 . In scientific notation, it is written as 8.1420199 × 10^7.
The sum of its digits is 34. It has a total of 4 prime factors and 16 positive divisors.
There are 67804128 positive integers (up to 81420199) that are relatively prime to 81420199.
81420199 has 16 divisors, whose sum is 95721472
The reverse of 81420199 is 99102418
Previous prime number is 223
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
eighty-one million four hundred twenty thousand one hundred ninety-nine
Scientific notation
8.1420199 × 10^7
Engineering notation
8.1420199 × 10^6
Prime Factorization
7 × 43 × 223 × 1213
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81420199
Product of the distinct prime numbers
The prime factorization of 81420199 is 7 × 43 × 223 × 1213.
Since it has a total of 4 prime factors.
6 , 6 , 19 , 19 , 136 , 580 , 270 , 3325 , 76640 , 52569 , 882433 , 95684 , 3513578 , 4784353 , 78721423 , 31539563 , 659095924 , 657667880 , 8688371073 , 3144973080
n×2
162840398
n×3
244260597
n×4
325680796
n×5
407100995
n÷2
40710099.5
n÷3
27140066.333333
n÷3
20355049.75
n÷5
16284039.8
n2
6629248805199601
n3
5.3975475693986E+23
n4
4.394693972124E+31
n5
3.5781685775444E+39
2 √n
9023.3141915817
3 √n
433.42176847286
4 √n
94.991126909737
5 √n
38.207307343399
1 , 7 , 43 , 223 , 301 , 1213 , 1561 , 8491 , 9589 , 52159 , 67123 , 270499 , 365113 , 1893493 , 11631457 , 81420199
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81420198
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81420199 can be divided by 16 positive divisors.
The sum of these divisors (counting 81420199) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110110100101111110100111
3
Ternary
12200012120111221
4
Quaternary
10312211332213
5
Quinary
131320421244
6
Senary
12025041211
8
Octal
466457647
10
Decimal
81420199
12
Duodecimal
23326207
16
Hexadecimal
4da5fa7
20
Vigesimal
158ha9j
36
Base36
1ch487
md5
0535b3c79e9699ee79a9e394b9b1c582
sha1
63bcc2e15787ab36c4dd526af52fb6781160542b
sha256
94ef2a86516314185077dabc1ea31ac3270cad261f3b854a8256e6336ed0c5c7
sha512
c956d1ec30937e6462385f5423d4a66b629bb2fedee1c3f1ec40c10f8bc3fc1f5ddc2ce7db25ab835d11566a958b05e2870322f0ac89e22b62d0a346aec889da
ripemd-160
dd8422db7d08a40ff34fd7e8b5a4a0824eb5e2b5
Diameter
162840398
Circumference
511578198.06444
Area
2.0826399345234E+16
Volume
2.2609194388566E+24
Surface area
8.3305597380936E+16
Circumference
511578198.06444
Perimeter
325680796
Area
6629248805199601
Diagonal
115145549.67692
Surface area
39775492831197606
Volume
5.3975475693986E+23
Space diagonal
141023921.43037
Perimeter
244260597
Area
2.8705489366552E+15
Altitude
70511960.715184
Surface area
2.8705489366552E+15
Volume
6.3610708134979E+22
Height
38381849.892305