81879938 is an even 8-digits composite number following 81879937
and preceding 81879939 . In scientific notation, it is written as 8.1879938 × 10^7.
The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors.
There are 35091396 positive integers (up to 81879938) that are relatively prime to 81879938.
81879938 has 8 divisors, whose sum is 140365632
The reverse of 81879938 is 83997818
Previous prime number is 7
Is Prime? no
Number parity even
Number length 8
Sum of Digits 53
Digital Root 8
Name
eighty-one million eight hundred seventy-nine thousand nine hundred thirty-eight
Scientific notation
8.1879938 × 10^7
Engineering notation
8.1879938 × 10^6
Prime Factorization
2 × 7 × 5848567
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81879938
Product of the distinct prime numbers
The prime factorization of 81879938 is 2 × 7 × 5848567.
Since it has a total of 3 prime factors.
9 , 1 , 39 , 47 , 393 , 633 , 4250 , 1238 , 47076 , 59962 , 227135 , 993259 , 3242796 , 487950 , 7207774 , 45309890 , 435270124 , 189217910 , 1979183132 , 4209491827
n×2
163759876
n×3
245639814
n×4
327519752
n×5
409399690
n÷2
40939969
n÷3
27293312.666667
n÷3
20469984.5
n÷5
16375987.6
n2
6704324246883844
n3
5.4894965366675E+23
n4
4.4947963607355E+31
n5
3.6803364733965E+39
2 √n
9048.7533948053
3 √n
434.23600958605
4 √n
95.124935715118
5 √n
38.250357717116
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
-81879937
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 81879938 can be divided by 8 positive divisors.
The sum of these divisors (counting 81879938) is 1, the average is 0.125.
Base
System
Value
2
Binary
100111000010110001110000010
3
Ternary
12201001221011022
4
Quaternary
10320112032002
5
Quinary
131430124223
6
Senary
12042545442
8
Octal
470261602
10
Decimal
81879938
12
Duodecimal
23508282
16
Hexadecimal
4e16382
20
Vigesimal
15bejgi
36
Base36
1cqyyq
md5
77897644d5736ede49d724b349df3816
sha1
21403b8ca0a98b95ade13abbf00b06de34715b59
sha256
d2ab2ef8f5cd214a3a16a3cc2f7f224223581da8e40fd48ebd768b1a32aa0455
sha512
0c106d209ac4f789ef314d0a39bfc98fab70effbf550e990c4d8e7c70ac2ff6d4b2bd99e28acb2144d478b4b8d80f1352fcead24e8f15850d731aadec6ce8982
ripemd-160
649bf78f8306c116d87e7bf7bfb3496784222b2d
Diameter
163759876
Circumference
514466823.39438
Area
2.1062255801294E+16
Volume
2.2994349322001E+24
Surface area
8.4249023205177E+16
Circumference
514466823.39438
Perimeter
327519752
Area
6704324246883844
Diagonal
115795718.80587
Surface area
40225945481303064
Volume
5.4894965366675E+23
Space diagonal
141820212.73659
Perimeter
245639814
Area
2.9030575565047E+15
Altitude
70910106.368295
Surface area
2.9030575565047E+15
Volume
6.4694337106294E+22
Height
38598572.935289