81738405 is an odd 8-digits composite number following 81738404
and preceding 81738406 . In scientific notation, it is written as 8.1738405 × 10^7.
The sum of its digits is 36. It has a total of 5 prime factors and 32 positive divisors.
There are 36564480 positive integers (up to 81738405) that are relatively prime to 81738405.
81738405 has 32 divisors, whose sum is 127226880
The reverse of 81738405 is 50483718
Previous prime number is 47
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
eighty-one million seven hundred thirty-eight thousand four hundred five
Scientific notation
8.1738405 × 10^7
Engineering notation
8.1738405 × 10^6
Prime Factorization
7 × 9 × 5 × 47 × 5521
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
81738405
Product of the distinct prime numbers
The prime factorization of 81738405 is 7 × 9 × 5 × 47 × 5521.
Since it has a total of 5 prime factors.
9 , 4 , 26 , 71 , 124 , 243 , 4901 , 1933 , 2496 , 4720 , 608958 , 977067 , 7112301 , 3709575 , 26797028 , 1240065 , 529525750 , 325714205 , 2496137657 , 412588728
n×2
163476810
n×3
245215215
n×4
326953620
n×5
408692025
n÷2
40869202.5
n÷3
27246135
n÷3
20434601.25
n÷5
16347681
n2
6681166851944025
n3
5.4610792201678E+23
n4
4.4637990503516E+31
n5
3.6486381461625E+39
2 √n
9040.9294323095
3 √n
433.98566673837
4 √n
95.083802155307
5 √n
38.237125086474
1 , 5 , 7 , 9 , 35 , 45 , 47 , 63 , 235 , 315 , 329 , 423 , 1645 , 2115 , 2961 , 5521 , 14805 , 27605 , 38647 , 49689 , 193235 , 248445 , 259487 , 347823 , 1297435 , 1739115 , 1816409 , 2335383 , 9082045 , 11676915 , 16347681 , 81738405
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81738404
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81738405 can be divided by 32 positive divisors.
The sum of these divisors (counting 81738405) is 1, the average is 0.03125.
Base
System
Value
2
Binary
100110111110011101010100101
3
Ternary
12200210202000100
4
Quaternary
10313303222211
5
Quinary
131411112110
6
Senary
12035534313
8
Octal
467635245
10
Decimal
81738405
12
Duodecimal
2345a399
16
Hexadecimal
4df3aa5
20
Vigesimal
15ah605
36
Base36
1cnxr9
md5
ce4cd89bb4b18e0823c3b02947d11f8e
sha1
1e5f2c3489dd852b4e611b79ed9acc8ac06a2fee
sha256
dfbcdd2f4a57529746c8f37f94ab11e773e769582d77a73e4c91c5909075b1b7
sha512
1b8f81ff8b7101cd094954cd6b14a6e2c3dd7c160df041237f14b2b38c21ee7eac2c22bd38e4fc3278b895d9bbcd8481cef11f0dede514ac1931bd47faecca4e
ripemd-160
9d104668f53fcca94e38f71ca129ede67dfd1385
Diameter
163476810
Circumference
513577545.32829
Area
2.0989504699475E+16
Volume
2.2875315145001E+24
Surface area
8.39580187979E+16
Circumference
513577545.32829
Perimeter
326953620
Area
6681166851944025
Diagonal
115595560.91774
Surface area
40087001111664150
Volume
5.4610792201678E+23
Space diagonal
141575070.38964
Perimeter
245215215
Area
2.893030110353E+15
Altitude
70787535.194821
Surface area
2.893030110353E+15
Volume
6.4359435819626E+22
Height
38531853.639248