81684927 is an odd 8-digits composite number following 81684926
and preceding 81684928 . In scientific notation, it is written as 8.1684927 × 10^7.
The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors.
There are 53956368 positive integers (up to 81684927) that are relatively prime to 81684927.
81684927 has 8 divisors, whose sum is 91594800
The reverse of 81684927 is 72948618
Previous prime number is 109
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
eighty-one million six hundred eighty-four thousand nine hundred twenty-seven
Scientific notation
8.1684927 × 10^7
Engineering notation
8.1684927 × 10^6
Prime Factorization
9 × 109 × 83267
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81684927
Product of the distinct prime numbers
The prime factorization of 81684927 is 9 × 109 × 83267.
Since it has a total of 3 prime factors.
9 , 10 , 53 , 7 , 367 , 976 , 9655 , 2224 , 61650 , 34135 , 297464 , 926368 , 4185557 , 8426875 , 53354038 , 15088552 , 860706199 , 910728690 , 6251276584 , 7273157776
n×2
163369854
n×3
245054781
n×4
326739708
n×5
408424635
n÷2
40842463.5
n÷3
27228309
n÷3
20421231.75
n÷5
16336985.4
n2
6672427298995329
n3
5.4503673683124E+23
n4
4.4521286060378E+31
n5
3.6367180017881E+39
2 √n
9037.9713984942
3 √n
433.89099990126
4 √n
95.068246005142
5 √n
38.232120388064
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81684926
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81684927 can be divided by 8 positive divisors.
The sum of these divisors (counting 81684927) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110111100110100110111111
3
Ternary
12200201000122200
4
Quaternary
10313212212333
5
Quinary
131402404202
6
Senary
12034442543
8
Octal
467464677
10
Decimal
81684927
12
Duodecimal
23433453
16
Hexadecimal
4de69bf
20
Vigesimal
15aac67
36
Base36
1cmshr
md5
a232d0a4fc7d0299bcb8a180cec0d868
sha1
5e314e8d38c97c3b513a249eee5e7cda623267e5
sha256
501943b963e80afe210465f52b6e16c207dcb46ff2487884fc3ab1ee92accae4
sha512
a95e45f9ab5008f3ce1c7850cdd2512833b1810b4185ffca74e90d077f480631c6c79434b2c3b6f943b6f55168ddf7db5febb81be6704f90c306aecc8da002f2
ripemd-160
96b12b28e2e5f18dd94ef1affbde2169c0f0924d
Diameter
163369854
Circumference
513241533.14444
Area
2.0962048584136E+16
Volume
2.2830445444874E+24
Surface area
8.3848194336543E+16
Circumference
513241533.14444
Perimeter
326739708
Area
6672427298995329
Diagonal
115519931.60486
Surface area
40034563793971974
Volume
5.4503673683124E+23
Space diagonal
141482443.77655
Perimeter
245054781
Area
2.8892457729174E+15
Altitude
70741221.888277
Surface area
2.8892457729174E+15
Volume
6.423319543486E+22
Height
38506643.868285