81969916 is an even 8-digits composite number following 81969915
and preceding 81969917 . In scientific notation, it is written as 8.1969916 × 10^7.
The sum of its digits is 49. It has a total of 5 prime factors and 24 positive divisors.
There are 35085312 positive integers (up to 81969916) that are relatively prime to 81969916.
81969916 has 24 divisors, whose sum is 164148320
The reverse of 81969916 is 61996918
Previous prime number is 1129
Is Prime? no Number parity even Number length 8 Sum of Digits 49 Digital Root 4
Name
eighty-one million nine hundred sixty-nine thousand nine hundred sixteen
Scientific notation
8.1969916 × 10^7
Engineering notation
8.1969916 × 10^6
Prime Factorization
2 × 2 × 7 × 1129 × 2593
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
40984958 Product of the distinct prime numbers
The prime factorization of 81969916 is 2 × 2 × 7 × 1129 × 2593.
Since it has a total of 5 prime factors.
10 , 1 , 9 , 9 , 7 , 677 , 2442 , 9206 , 14164 , 57425 , 709573 , 21779 , 4302664 , 1214036 , 79635280 , 37930882 , 338519849 , 395529159 , 4330409216 , 1075719785
n×2
163939832
n×3
245909748
n×4
327879664
n×5
409849580
n÷2
40984958
n÷3
27323305.333333
n÷3
20492479
n÷5
16393983.2
n2
6719067129047056
n3
5.5076136816635E+23
n4
4.5145863084641E+31
n5
3.7006026047955E+39
2 √n9053.723874738
3 √n434.39501224846
4 √n95.151058190322
5 √n38.258760700644
1 , 2 , 4 , 7 , 14 , 28 , 1129 , 2258 , 2593 , 4516 , 5186 , 7903 , 10372 , 15806 , 18151 , 31612 , 36302 , 72604 , 2927497 , 5854994 , 11709988 , 20492479 , 40984958 , 81969916
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-81969915 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81969916 can be divided by 24 positive divisors.
The sum of these divisors (counting 81969916) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
100111000101100001011111100
3
Ternary
12201020111120211
4
Quaternary
10320230023330
5
Quinary
131441014131
6
Senary
12044522204
8
Octal
470541374
10
Decimal
81969916
12
Duodecimal
23550364
16
Hexadecimal
4e2c2fc
20
Vigesimal
15c64fg
36
Base36
1cswe4
md5
82eaa4841a8e531e57728bab19a0b3bf
sha1
c5ba86b017422def5cc1e64f42cf4de71d4ccd38
sha256
0ed4a478377f280d164e7ccfff57a5b46cce945b4f579b27b88d58d8afd4e5cc
sha512
e0625de73427e46cef9e64640cddb3da1f303c2d60c3fc53e0371cd82712ff98a4dd2f9230c4d961c12d5b569fb5ffce9f2b62559ac5c63dd92049af49558abe
ripemd-160
25c379529b574b2c167b6e15a878631bab767dba
Diameter
163939832
Circumference
515032171.84194
Area
2.1108571931591E+16
Volume
2.30702382415E+24
Surface area
8.4434287726364E+16
Circumference
515032171.84194
Perimeter
327879664
Area
6719067129047056
Diagonal
115922966.91378
Surface area
40314402774282336
Volume
5.5076136816635E+23
Space diagonal
141976059.20415
Perimeter
245909748
Area
2.9094414117439E+15
Altitude
70988029.602077
Surface area
2.9094414117439E+15
Volume
6.4907849707668E+22
Height
38640988.971261