78855981 is an odd 8-digits composite number following 78855980
and preceding 78855982 . In scientific notation, it is written as 7.8855981 × 10^7.
The sum of its digits is 51. It has a total of 3 prime factors and 8 positive divisors.
There are 51708720 positive integers (up to 78855981) that are relatively prime to 78855981.
78855981 has 8 divisors, whose sum is 106865184
The reverse of 78855981 is 18955887
Previous prime number is 61
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 51
Digital Root 6
Name
seventy-eight million eight hundred fifty-five thousand nine hundred eighty-one
Scientific notation
7.8855981 × 10^7
Engineering notation
7.8855981 × 10^6
Prime Factorization
3 × 61 × 430907
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
78855981
Product of the distinct prime numbers
The prime factorization of 78855981 is 3 × 61 × 430907.
Since it has a total of 3 prime factors.
10 , 4 , 91 , 54 , 869 , 335 , 1992 , 1831 , 9960 , 74188 , 654187 , 340207 , 6761702 , 2281640 , 60966779 , 90207413 , 632398557 , 235691064 , 5766135643 , 8640391948
n×2
157711962
n×3
236567943
n×4
315423924
n×5
394279905
n÷2
39427990.5
n÷3
26285327
n÷3
19713995.25
n÷5
15771196.2
n2
6218265739472361
n3
4.9034744500478E+23
n4
3.8666828806696E+31
n5
3.0491107177111E+39
2 √n
8880.0890198241
3 √n
428.82314040359
4 √n
94.23422424907
5 √n
37.96355969639
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
-78855980
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 78855981 can be divided by 8 positive divisors.
The sum of these divisors (counting 78855981) is 1, the average is 0.125.
Base
System
Value
2
Binary
100101100110011111100101101
3
Ternary
12111101022001220
4
Quaternary
10230303330231
5
Quinary
130141342411
6
Senary
11454053553
8
Octal
454637455
10
Decimal
78855981
12
Duodecimal
224aa2b9
16
Hexadecimal
4b33f2d
20
Vigesimal
14cgjj1
36
Base36
1ay5nx
md5
e31e32cb0d6dc0aa73291c6b913ef349
sha1
86d091d7a6d50ccf2f64e037d345adcd6b9a1328
sha256
5e9c60e55d4a02a6faf7a3e3b13f16420b61a8767bd0eae677cf8c24310013e1
sha512
742fdf94f0ac717c6a3b7693611282f91643c72988002b58886a068ec49cda904412442ecffe9ad4734c65e103b070b5cd1e73fb31aeb066ca1e87b17a8318b5
ripemd-160
7975e655a951fd9e65a05ac04ab9e9306f56b5c0
Diameter
157711962
Circumference
495466741.20243
Area
1.9535257965195E+16
Volume
2.0539625745781E+24
Surface area
7.8141031860782E+16
Circumference
495466741.20243
Perimeter
315423924
Area
6218265739472361
Diagonal
111519197.80444
Surface area
37309594436834166
Volume
4.9034744500478E+23
Space diagonal
136582565.57269
Perimeter
236567943
Area
2.6925880489327E+15
Altitude
68291282.786343
Surface area
2.6925880489327E+15
Volume
5.7788000583397E+22
Height
37173065.934812