81363902 is an even 8-digits composite number following 81363901
and preceding 81363903 . In scientific notation, it is written as 8.1363902 × 10^7.
The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors.
There are 38828160 positive integers (up to 81363902) that are relatively prime to 81363902.
81363902 has 16 divisors, whose sum is 127715712
The reverse of 81363902 is 20936318
Previous prime number is 73
Is Prime? no
Number parity even
Number length 8
Sum of Digits 32
Digital Root 5
Name
eighty-one million three hundred sixty-three thousand nine hundred two
Scientific notation
8.1363902 × 10^7
Engineering notation
8.1363902 × 10^6
Prime Factorization
2 × 31 × 73 × 17977
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81363902
Product of the distinct prime numbers
The prime factorization of 81363902 is 2 × 31 × 73 × 17977.
Since it has a total of 4 prime factors.
5 , 5 , 78 , 21 , 324 , 651 , 3209 , 1693 , 24566 , 54249 , 349484 , 516131 , 571462 , 1472289 , 21323254 , 66407397 , 462890521 , 994510196 , 207189791 , 8974635068
n×2
162727804
n×3
244091706
n×4
325455608
n×5
406819510
n÷2
40681951
n÷3
27121300.666667
n÷3
20340975.5
n÷5
16272780.4
n2
6620084548665604
n3
5.3863591044934E+23
n4
4.3825519431481E+31
n5
3.5658152681221E+39
2 √n
9020.1941220796
3 √n
433.3218507148
4 √n
94.974702537463
5 √n
38.202022286482
1 , 2 , 31 , 62 , 73 , 146 , 2263 , 4526 , 17977 , 35954 , 557287 , 1114574 , 1312321 , 2624642 , 40681951 , 81363902
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
-81363901
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 81363902 can be divided by 16 positive divisors.
The sum of these divisors (counting 81363902) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110110011000001110111110
3
Ternary
12200002201021212
4
Quaternary
10312120032332
5
Quinary
131312121102
6
Senary
12023524422
8
Octal
466301676
10
Decimal
81363902
12
Duodecimal
232b9712
16
Hexadecimal
4d983be
20
Vigesimal
158a9f2
36
Base36
1cfwse
md5
d66ae66177be115542c8983fd4f16779
sha1
beda08b5859860204312232073c4e8e31bf38c97
sha256
5bd80df17b4da545daf599f39ccf8873607b20e97f6f616f4ebc45040b5c098e
sha512
b48e10b6160989d606eb2c1ffffd8043935434512dc850dccfb22853598a80dd0d293dc03d6bc6c73f31f98d8d1777145cc211db82472112c933780fb3bf5ba7
ripemd-160
c6a151101c3e92719cdccbb65624127d2eb8b60a
Diameter
162727804
Circumference
511224473.5812
Area
2.0797608984231E+16
Volume
2.2562328256364E+24
Surface area
8.3190435936925E+16
Circumference
511224473.5812
Perimeter
325455608
Area
6620084548665604
Diagonal
115065933.696
Surface area
39720507291993624
Volume
5.3863591044934E+23
Space diagonal
140926412.16605
Perimeter
244091706
Area
2.8665806971726E+15
Altitude
70463206.083027
Surface area
2.8665806971726E+15
Volume
6.3478850811553E+22
Height
38355311.231998