81678045 is an odd 8-digits composite number following 81678044
and preceding 81678046 . In scientific notation, it is written as 8.1678045 × 10^7.
The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors.
There are 42638400 positive integers (up to 81678045) that are relatively prime to 81678045.
81678045 has 16 divisors, whose sum is 88989696
The reverse of 81678045 is 54087618
Previous prime number is 283
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
eighty-one million six hundred seventy-eight thousand forty-five
Scientific notation
8.1678045 × 10^7
Engineering notation
8.1678045 × 10^6
Prime Factorization
15 × 71 × 283 × 271
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81678045
Product of the distinct prime numbers
The prime factorization of 81678045 is 15 × 71 × 283 × 271.
Since it has a total of 4 prime factors.
6 , 9 , 22 , 68 , 30 , 271 , 1807 , 8457 , 6563 , 76228 , 187339 , 746475 , 651724 , 9800837 , 92284694 , 13222332 , 399091626 , 939451402 , 2369125403 , 9849367166
n×2
163356090
n×3
245034135
n×4
326712180
n×5
408390225
n÷2
40839022.5
n÷3
27226015
n÷3
20419511.25
n÷5
16335609
n2
6671303035022025
n3
5.4489898950317E+23
n4
4.4506284185094E+31
n5
3.6351862824529E+39
2 √n
9037.5906634457
3 √n
433.87881437396
4 √n
95.06624355388
5 √n
38.231476150921
1 , 15 , 71 , 271 , 283 , 1065 , 4065 , 4245 , 19241 , 20093 , 76693 , 288615 , 301395 , 1150395 , 5445203 , 81678045
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
-81678044
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 81678045 can be divided by 16 positive divisors.
The sum of these divisors (counting 81678045) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110111100100111011011101
3
Ternary
12200200200012210
4
Quaternary
10313210323131
5
Quinary
131402144140
6
Senary
12034351033
8
Octal
467447335
10
Decimal
81678045
12
Duodecimal
2342b479
16
Hexadecimal
4de4edd
20
Vigesimal
15a9f25
36
Base36
1cmn6l
md5
718a9a088ff08d63f2a554ee01401d0f
sha1
27c5e3b015b9d6037c37a6b0ed78eb921a809d2c
sha256
0787908e47dce1d7662c7bd94dc707a54037f77472314d6464a7d8ddcf14d66c
sha512
2e52fc8ce3682c2a49779f53aba6fe046fb56e0755ee2464da09f7ebaa9487463c02522242693e81b1bb36268a6436bf870bdb8e95edffeb71ef4b75b024d0ef
ripemd-160
de14c0e727bbea3718dab8a9002b2583c91847d0
Diameter
163356090
Circumference
513198292.26315
Area
2.0958516604696E+16
Volume
2.2824675498289E+24
Surface area
8.3834066418786E+16
Circumference
513198292.26315
Perimeter
326712180
Area
6671303035022025
Diagonal
115510198.98712
Surface area
40027818210132150
Volume
5.4489898950317E+23
Space diagonal
141470523.8029
Perimeter
245034135
Area
2.8887589523366E+15
Altitude
70735261.901449
Surface area
2.8887589523366E+15
Volume
6.4216961756564E+22
Height
38503399.662373