81684976 is an even 8-digits composite number following 81684975
and preceding 81684977 . In scientific notation, it is written as 8.1684976 × 10^7.
The sum of its digits is 49. It has a total of 6 prime factors and 20 positive divisors.
There are 40766400 positive integers (up to 81684976) that are relatively prime to 81684976.
81684976 has 20 divisors, whose sum is 158559544
The reverse of 81684976 is 67948618
Previous prime number is 571
Is Prime? no
Number parity even
Number length 8
Sum of Digits 49
Digital Root 4
Name
eighty-one million six hundred eighty-four thousand nine hundred seventy-six
Scientific notation
8.1684976 × 10^7
Engineering notation
8.1684976 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 571 × 8941
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
10210622
Product of the distinct prime numbers
The prime factorization of 81684976 is 2 × 2 × 2 × 2 × 571 × 8941.
Since it has a total of 6 prime factors.
2 , 3 , 19 , 59 , 433 , 422 , 5270 , 4397 , 99978 , 88562 , 476712 , 619022 , 261822 , 2336101 , 13530717 , 99507374 , 806848216 , 94819127 , 8196061672 , 170516697
n×2
163369952
n×3
245054928
n×4
326739904
n×5
408424880
n÷2
40842488
n÷3
27228325.333333
n÷3
20421244
n÷5
16336995.2
n2
6672435304120576
n3
5.4503771767864E+23
n4
4.4521392887675E+31
n5
3.6367289095163E+39
2 √n
9037.9741092791
3 √n
433.89108666004
4 √n
95.068260262188
5 √n
38.232124974891
1 , 2 , 4 , 8 , 16 , 571 , 1142 , 2284 , 4568 , 8941 , 9136 , 17882 , 35764 , 71528 , 143056 , 5105311 , 10210622 , 20421244 , 40842488 , 81684976
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81684975
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81684976 can be divided by 20 positive divisors.
The sum of these divisors (counting 81684976) is 1, the average is 0.05.
Base
System
Value
2
Binary
100110111100110100111110000
3
Ternary
12200201000201111
4
Quaternary
10313212213300
5
Quinary
131402404401
6
Senary
12034443104
8
Octal
467464760
10
Decimal
81684976
12
Duodecimal
23433494
16
Hexadecimal
4de69f0
20
Vigesimal
15aac8g
36
Base36
1cmsj4
md5
d7f4b093b1b4d684c997926a595e08e5
sha1
bbe695921f60186c6298975ef8519b222638eda9
sha256
deaed8c1323ed30ef4af285569f179c9a61b37b3f8f152ca4bb54f0a45bdda7c
sha512
f38077db69e5fe6ae996f6d1068cc7bf85559a3f49e6e1c16d1697549497a65263c832ac335977fd62ae936eb412fd26dfbdd4236ce2d42e227d46a5859b976a
ripemd-160
150918101e9e53f172372b042636f539808eb312
Diameter
163369952
Circumference
513241841.02052
Area
2.0962073732978E+16
Volume
2.2830486530514E+24
Surface area
8.3848294931914E+16
Circumference
513241841.02052
Perimeter
326739904
Area
6672435304120576
Diagonal
115520000.90132
Surface area
40034611824723456
Volume
5.4503771767864E+23
Space diagonal
141482528.64704
Perimeter
245054928
Area
2.8892492392383E+15
Altitude
70741264.323522
Surface area
2.8892492392383E+15
Volume
6.4233311028834E+22
Height
38506666.967107