81377215 is an odd 8-digits composite number following 81377214
and preceding 81377216 . In scientific notation, it is written as 8.1377215 × 10^7.
The sum of its digits is 34. It has a total of 4 prime factors and 16 positive divisors.
There are 60659200 positive integers (up to 81377215) that are relatively prime to 81377215.
81377215 has 16 divisors, whose sum is 104431680
The reverse of 81377215 is 51277318
Previous prime number is 101
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
eighty-one million three hundred seventy-seven thousand two hundred fifteen
Scientific notation
8.1377215 × 10^7
Engineering notation
8.1377215 × 10^6
Prime Factorization
5 × 17 × 101 × 9479
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81377215
Product of the distinct prime numbers
The prime factorization of 81377215 is 5 × 17 × 101 × 9479.
Since it has a total of 4 prime factors.
6 , 3 , 12 , 85 , 35 , 240 , 5319 , 3076 , 44260 , 81084 , 870389 , 468278 , 2682309 , 8997491 , 86003091 , 13776593 , 747558291 , 584151363 , 608270109 , 6339368156
n×2
162754430
n×3
244131645
n×4
325508860
n×5
406886075
n÷2
40688607.5
n÷3
27125738.333333
n÷3
20344303.75
n÷5
16275443
n2
6622251121156225
n3
5.3890035327032E+23
n4
4.3854209911655E+31
n5
3.5687334686359E+39
2 √n
9020.9320471889
3 √n
433.34548322278
4 √n
94.978587308871
5 √n
38.203272350029
1 , 5 , 17 , 85 , 101 , 505 , 1717 , 8585 , 9479 , 47395 , 161143 , 805715 , 957379 , 4786895 , 16275443 , 81377215
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81377214
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81377215 can be divided by 16 positive divisors.
The sum of these divisors (counting 81377215) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110110011011011110111111
3
Ternary
12200010101112221
4
Quaternary
10312123132333
5
Quinary
131313032330
6
Senary
12024110211
8
Octal
466333677
10
Decimal
81377215
12
Duodecimal
23305367
16
Hexadecimal
4d9b7bf
20
Vigesimal
158c30f
36
Base36
1cg727
md5
ea6a65923652f490909e37d8013a7edb
sha1
c676cf7aebe2cae143860f9e54d2318045015740
sha256
b1724b4e89f5873c354e0c4cfd4b9d664f32b79e144582a9014fc02e26bee1d5
sha512
0c7f415824f8e687b3e4dbec6290dcc362c872d094a1289737064948d1f67d09c5284c1c90eb008349b0df317adc7e5f4b2086cd6dcd6b25e86365aa7225e694
ripemd-160
8e6aa0d1deaf754d9f0ec199209ecc2e5a516362
Diameter
162754430
Circumference
511308121.62719
Area
2.0804415472451E+16
Volume
2.2573405211346E+24
Surface area
8.3217661889805E+16
Circumference
511308121.62719
Perimeter
325508860
Area
6622251121156225
Diagonal
115084761.12115
Surface area
39733506726937350
Volume
5.3890035327032E+23
Space diagonal
140949470.95846
Perimeter
244131645
Area
2.8675188505806E+15
Altitude
70474735.479228
Surface area
2.8675188505806E+15
Volume
6.3510015696878E+22
Height
38361587.040384