81620123 is an odd 8-digits composite number following 81620122
and preceding 81620124 . In scientific notation, it is written as 8.1620123 × 10^7.
The sum of its digits is 23. It has a total of 4 prime factors and 16 positive divisors.
There are 69573504 positive integers (up to 81620123) that are relatively prime to 81620123.
81620123 has 16 divisors, whose sum is 94893120
The reverse of 81620123 is 32102618
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
eighty-one million six hundred twenty thousand one hundred twenty-three
Scientific notation
8.1620123 × 10^7
Engineering notation
8.1620123 × 10^6
Prime Factorization
29 × 23 × 13 × 9413
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81620123
Product of the distinct prime numbers
The prime factorization of 81620123 is 29 × 23 × 13 × 9413.
Since it has a total of 4 prime factors.
1 , 6 , 50 , 26 , 444 , 935 , 2223 , 9257 , 47285 , 66443 , 851629 , 717868 , 4095059 , 418273 , 13983360 , 40026648 , 166577499 , 995381693 , 1023609481 , 2106763546
n×2
163240246
n×3
244860369
n×4
326480492
n×5
408100615
n÷2
40810061.5
n÷3
27206707.666667
n÷3
20405030.75
n÷5
16324024.6
n2
6661844478535129
n3
5.4374056574491E+23
n4
4.4380171856189E+31
n5
3.6223150856633E+39
2 √n
9034.3855906199
3 √n
433.77622837463
4 √n
95.049385009162
5 √n
38.226052240546
1 , 13 , 23 , 29 , 299 , 377 , 667 , 8671 , 9413 , 122369 , 216499 , 272977 , 2814487 , 3548701 , 6278471 , 81620123
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
-81620122
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 81620123 can be divided by 16 positive divisors.
The sum of these divisors (counting 81620123) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110111010110110010011011
3
Ternary
12200120201202112
4
Quaternary
10313112302123
5
Quinary
131343320443
6
Senary
12033222535
8
Octal
467266233
10
Decimal
81620123
12
Duodecimal
23401a4b
16
Hexadecimal
4dd6c9b
20
Vigesimal
15a2a63
36
Base36
1clehn
md5
f6960139f4126f1d2977e30c5d037482
sha1
19cfd777a0a8c128dd6888dcb5e480bc538124c4
sha256
35cde5351a929bb77a8cd984a911909dfe85bfbf6864acdbbbeea23c8acfb2b2
sha512
c1dc6f393d1a15be1b934fd0d9a0430b8b6a041fc0b723e66f759cc8ed7f7ca381eddd4ecf15299c2772c429626f318a447523eb084c76e82505cdab95a10fa5
ripemd-160
de41b4d604c1a75b6b7eef7dc9c0434b433d637a
Diameter
163240246
Circumference
512834357.60379
Area
2.0928801673124E+16
Volume
2.2776151557373E+24
Surface area
8.3715206692495E+16
Circumference
512834357.60379
Perimeter
326480492
Area
6661844478535129
Diagonal
115428284.90916
Surface area
39971066871210774
Volume
5.4374056574491E+23
Space diagonal
141370199.95602
Perimeter
244860369
Area
2.8846632772363E+15
Altitude
70685099.978011
Surface area
2.8846632772363E+15
Volume
6.4080440207406E+22
Height
38476094.96972