81837488 is an even 8-digits composite number following 81837487
and preceding 81837489 . In scientific notation, it is written as 8.1837488 × 10^7.
The sum of its digits is 47. It has a total of 6 prime factors and 20 positive divisors.
There are 39812544 positive integers (up to 81837488) that are relatively prime to 81837488.
81837488 has 20 divisors, whose sum is 162846720
The reverse of 81837488 is 88473818
Previous prime number is 37
Is Prime? no
Number parity even
Number length 8
Sum of Digits 47
Digital Root 2
Name
eighty-one million eight hundred thirty-seven thousand four hundred eighty-eight
Scientific notation
8.1837488 × 10^7
Engineering notation
8.1837488 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 37 × 138239
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
10229686
Product of the distinct prime numbers
The prime factorization of 81837488 is 2 × 2 × 2 × 2 × 37 × 138239.
Since it has a total of 6 prime factors.
2 , 4 , 93 , 5 , 228 , 110 , 6840 , 1104 , 60690 , 89281 , 639005 , 216178 , 1966188 , 3920296 , 74324930 , 86017645 , 468380461 , 273892417 , 6639555504 , 4415388132
n×2
163674976
n×3
245512464
n×4
327349952
n×5
409187440
n÷2
40918744
n÷3
27279162.666667
n÷3
20459372
n÷5
16367497.6
n2
6697374442150144
n3
5.4809630054097E+23
n4
4.4854824418366E+31
n5
3.6708061550801E+39
2 √n
9046.4074637394
3 √n
434.16095455014
4 √n
95.112604126579
5 √n
38.246390775878
1 , 2 , 4 , 8 , 16 , 37 , 74 , 148 , 296 , 592 , 138239 , 276478 , 552956 , 1105912 , 2211824 , 5114843 , 10229686 , 20459372 , 40918744 , 81837488
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81837487
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81837488 can be divided by 20 positive divisors.
The sum of these divisors (counting 81837488) is 1, the average is 0.05.
Base
System
Value
2
Binary
100111000001011110110110000
3
Ternary
12200222202221002
4
Quaternary
10320023312300
5
Quinary
131422244423
6
Senary
12042021132
8
Octal
470136660
10
Decimal
81837488
12
Duodecimal
234a77a8
16
Hexadecimal
4e0bdb0
20
Vigesimal
15b9de8
36
Base36
1cq27k
md5
72637f4c38a463a2147930ed49bf354b
sha1
dc9b9adfe386a447ed745ae0a91a4a765527c63d
sha256
79f8d70ce1eeafefffc973bd63d939c71ef272291cb9a70d26e9c4d30e0cf010
sha512
7195c82ff3b0dc2f9c35fb267528bf3f22e9077799e17f2ee9da29d83043502f34792913cc1aa4b131f31f8278e5f2936546c475cd19e6672ed71f259469fb35
ripemd-160
bbcb803d3b617255f25e46c93f1a0edf1df0feef
Diameter
163674976
Circumference
514200102.17809
Area
2.1040422345799E+16
Volume
2.2958604149857E+24
Surface area
8.4161689383196E+16
Circumference
514200102.17809
Perimeter
327349952
Area
6697374442150144
Diagonal
115735685.44015
Surface area
40184246652900864
Volume
5.4809630054097E+23
Space diagonal
141746687.17981
Perimeter
245512464
Area
2.9000482027793E+15
Altitude
70873343.589904
Surface area
2.9000482027793E+15
Volume
6.4593768475963E+22
Height
38578561.813382