81121377 is an odd 8-digits composite number following 81121376
and preceding 81121378 . In scientific notation, it is written as 8.1121377 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 53654832 positive integers (up to 81121377) that are relatively prime to 81121377.
81121377 has 8 divisors, whose sum is 109014016
The reverse of 81121377 is 77312118
Previous prime number is 127
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
eighty-one million one hundred twenty-one thousand three hundred seventy-seven
Scientific notation
8.1121377 × 10^7
Engineering notation
8.1121377 × 10^6
Prime Factorization
3 × 127 × 212917
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81121377
Product of the distinct prime numbers
The prime factorization of 81121377 is 3 × 127 × 212917.
Since it has a total of 3 prime factors.
2 , 5 , 58 , 26 , 647 , 528 , 3341 , 7758 , 67127 , 2044 , 996017 , 763860 , 3908835 , 8581750 , 93932365 , 89546490 , 824994366 , 875434178 , 5067465548 , 839855407
n×2
162242754
n×3
243364131
n×4
324485508
n×5
405606885
n÷2
40560688.5
n÷3
27040459
n÷3
20280344.25
n÷5
16224275.4
n2
6580677806376129
n3
5.3383364524657E+23
n4
4.3305320391331E+31
n5
3.512987221571E+39
2 √n
9006.74064243
3 √n
432.89088165946
4 √n
94.903849460546
5 √n
38.179220991071
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
-81121376
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 81121377 can be divided by 8 positive divisors.
The sum of these divisors (counting 81121377) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110101011101000001100001
3
Ternary
12122122101121110
4
Quaternary
10311131001201
5
Quinary
131231341002
6
Senary
12014413533
8
Octal
465350141
10
Decimal
81121377
12
Duodecimal
232012a9
16
Hexadecimal
4d5d061
20
Vigesimal
157038h
36
Base36
1capnl
md5
924a3470dc1f933f7470041982f33d9b
sha1
62cf27478352a658de08af2ef7a015e2e163056e
sha256
c7d59633e1796e022728057e4b0ae26fdd5b92f1ab8460cad677be8c4d18d28f
sha512
cd2fa4bc1668d127ce9e1c5e17f1f3914812211fcf02de1ff5fda0505a09e7337fdf128935324044fd48c996d7ef9c46f18d65b1c55952a46481010f3d663144
ripemd-160
470727a477751534116142dd4dc0664b7dd8ee40
Diameter
162242754
Circumference
509700644.06458
Area
2.0673809052153E+16
Volume
2.2361171441942E+24
Surface area
8.2695236208611E+16
Circumference
509700644.06458
Perimeter
324485508
Area
6580677806376129
Diagonal
114722951.55178
Surface area
39484066838256774
Volume
5.3383364524657E+23
Space diagonal
140506346.54395
Perimeter
243364131
Area
2.8495170772211E+15
Altitude
70253173.271975
Surface area
2.8495170772211E+15
Volume
6.2912898429897E+22
Height
38240983.850594