81069969 is an odd 8-digits composite number following 81069968
and preceding 81069970 . In scientific notation, it is written as 8.1069969 × 10^7.
The sum of its digits is 48. It has a total of 2 prime factors and 4 positive divisors.
There are 54046644 positive integers (up to 81069969) that are relatively prime to 81069969.
81069969 has 4 divisors, whose sum is 108093296
The reverse of 81069969 is 96996018
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 48
Digital Root 3
Name
eighty-one million sixty-nine thousand nine hundred sixty-nine
Scientific notation
8.1069969 × 10^7
Engineering notation
8.1069969 × 10^6
Prime Factorization
3 × 27023323
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81069969
Product of the distinct prime numbers
The prime factorization of 81069969 is 3 × 27023323.
Since it has a total of 2 prime factors.
7 , 6 , 98 , 77 , 389 , 783 , 6995 , 7944 , 42954 , 33798 , 205846 , 828394 , 6599994 , 6247301 , 33618847 , 8521870 , 412559313 , 552811856 , 861220244 , 1206333734
n×2
162139938
n×3
243209907
n×4
324279876
n×5
405349845
n÷2
40534984.5
n÷3
27023323
n÷3
20267492.25
n÷5
16213993.8
n2
6572339873660961
n3
5.3281938981516E+23
n4
4.3195651414914E+31
n5
3.5018701211419E+39
2 √n
9003.886327581
3 √n
432.79941889157
4 √n
94.88881033916
5 √n
38.174380799305
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
-81069968
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 81069969 can be divided by 4 positive divisors.
The sum of these divisors (counting 81069969) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110101010000011110010001
3
Ternary
12122112210002110
4
Quaternary
10311100132101
5
Quinary
131223214334
6
Senary
12013335533
8
Octal
465203621
10
Decimal
81069969
12
Duodecimal
231975a9
16
Hexadecimal
4d50791
20
Vigesimal
156dei9
36
Base36
1c9lzl
md5
4895708c861a8c7016d2b33e034108fe
sha1
20144178582db4a08ebd4525ef3b3f5fef074167
sha256
0074eee4c510b33dd303d04a46edf5fbc09d0b2bb63045be19f7287ed0bf658c
sha512
359699ddfc4135b82e7ddc3c6e3e352a20261985330cd1c97a8aad41c1b63d762c0ac2c5bac1058dfb86c1b045ef2fe03d2b62c3ecb7720df5488abac1e218ae
ripemd-160
8e4531f39ca0048b8ecc8b1deaac2202115b47ea
Diameter
162139938
Circumference
509377638.0743
Area
2.0647614663989E+16
Volume
2.231868640978E+24
Surface area
8.2590458655954E+16
Circumference
509377638.0743
Perimeter
324279876
Area
6572339873660961
Diagonal
114650249.66097
Surface area
39434039241965766
Volume
5.3281938981516E+23
Space diagonal
140417305.27603
Perimeter
243209907
Area
2.8459066464479E+15
Altitude
70208652.638017
Surface area
2.8459066464479E+15
Volume
6.2793367280996E+22
Height
38216749.886989