81104989 is an odd 8-digits composite number following 81104988
and preceding 81104990 . In scientific notation, it is written as 8.1104989 × 10^7.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 69518556 positive integers (up to 81104989) that are relatively prime to 81104989.
81104989 has 4 divisors, whose sum is 92691424
The reverse of 81104989 is 98940118
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
eighty-one million one hundred four thousand nine hundred eighty-nine
Scientific notation
8.1104989 × 10^7
Engineering notation
8.1104989 × 10^6
Prime Factorization
7 × 11586427
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81104989
Product of the distinct prime numbers
The prime factorization of 81104989 is 7 × 11586427.
Since it has a total of 2 prime factors.
1 , 6 , 45 , 42 , 153 , 2 , 3361 , 7349 , 81359 , 77933 , 33500 , 632409 , 5758557 , 2597827 , 33066240 , 2348696 , 583500899 , 632872010 , 6042130493 , 88003668
n×2
162209978
n×3
243314967
n×4
324419956
n×5
405524945
n÷2
40552494.5
n÷3
27034996.333333
n÷3
20276247.25
n÷5
16220997.8
n2
6578019240690121
n3
5.3351017815796E+23
n4
4.3270337130889E+31
n5
3.5094402170271E+39
2 √n
9005.8308334101
3 √n
432.86172907434
4 √n
94.899056019594
5 √n
38.177678286392
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81104988
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81104989 can be divided by 4 positive divisors.
The sum of these divisors (counting 81104989) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110101011001000001011101
3
Ternary
12122121120010111
4
Quaternary
10311121001131
5
Quinary
131230324424
6
Senary
12014210021
8
Octal
465310135
10
Decimal
81104989
12
Duodecimal
231b3911
16
Hexadecimal
4d5905d
20
Vigesimal
156i299
36
Base36
1cad0d
md5
3b1c34adbd0192c4ef14c26a2d4cacfe
sha1
a642b07dd60539117261f5fa637851479a81e585
sha256
ce3a7f87ecd904c0e01177887ca99396527fd01398a113447394b94a6765bd34
sha512
6d64c09cf4d0b03b4b2b8d69c1396317da45c780d3ebfe5316acb31b774c3a6b4c4e6faceb9448a0a02943438df335ce8df5ee4e8235164d006c0af02964a3de
ripemd-160
b33edb98dfe371b3d9c0242b32805d7fe9eedb19
Diameter
162209978
Circumference
509597675.22376
Area
2.0665456921724E+16
Volume
2.2347622084219E+24
Surface area
8.2661827686898E+16
Circumference
509597675.22376
Perimeter
324419956
Area
6578019240690121
Diagonal
114699775.41992
Surface area
39468115444140726
Volume
5.3351017815796E+23
Space diagonal
140477961.69531
Perimeter
243314967
Area
2.8483658845102E+15
Altitude
70238980.847657
Surface area
2.8483658845102E+15
Volume
6.2874777467923E+22
Height
38233258.473307