81223908 is an even 8-digits composite number following 81223907
and preceding 81223909 . In scientific notation, it is written as 8.1223908 × 10^7.
The sum of its digits is 33. It has a total of 4 prime factors and 12 positive divisors.
There are 27074632 positive integers (up to 81223908) that are relatively prime to 81223908.
81223908 has 12 divisors, whose sum is 189522480
The reverse of 81223908 is 80932218
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 33
Digital Root 6
Name
eighty-one million two hundred twenty-three thousand nine hundred eight
Scientific notation
8.1223908 × 10^7
Engineering notation
8.1223908 × 10^6
Prime Factorization
2 × 2 × 3 × 6768659
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
40611954
Product of the distinct prime numbers
The prime factorization of 81223908 is 2 × 2 × 3 × 6768659.
Since it has a total of 4 prime factors.
8 , 5 , 70 , 79 , 933 , 278 , 7156 , 7244 , 13395 , 30966 , 687430 , 32388 , 9861902 , 7489037 , 58818094 , 52544919 , 579799847 , 920296634 , 6899284094 , 3474795661
n×2
162447816
n×3
243671724
n×4
324895632
n×5
406119540
n÷2
40611954
n÷3
27074636
n÷3
20305977
n÷5
16244781.6
n2
6597323230792464
n3
5.3586037514415E+23
n4
4.3524673811554E+31
n5
3.5352441013997E+39
2 √n
9012.4307486937
3 √n
433.07318481287
4 √n
94.933822996305
5 √n
38.188867218187
1 , 2 , 3 , 4 , 6 , 12 , 6768659 , 13537318 , 20305977 , 27074636 , 40611954 , 81223908
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81223907
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81223908 can be divided by 12 positive divisors.
The sum of these divisors (counting 81223908) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100110101110110000011100100
3
Ternary
12122211121020220
4
Quaternary
10311312003210
5
Quinary
131243131113
6
Senary
12020524340
8
Octal
465660344
10
Decimal
81223908
12
Duodecimal
232506b0
16
Hexadecimal
4d760e4
20
Vigesimal
157cjf8
36
Base36
1ccwro
md5
505ba2d0963d695292317f959753f032
sha1
2bd827190ed48384ee55f3ef0e5297e262bbc483
sha256
8a9d40f4490508babcb1a1a9158b816c76fb185435dac095dab19392d5800e50
sha512
d3204d40e175ecd6b4d931ad2e5801f1b3d55f28d2c19d3d205da23655d509d6f0f37da773fecec657e3ad48bbbf193f9151b5abc49d1b79364638add8662d46
ripemd-160
2c42023b1730eb518295d75ac0d3112bf9fde353
Diameter
162447816
Circumference
510344865.33731
Area
2.0726102195215E+16
Volume
2.244606690537E+24
Surface area
8.290440878086E+16
Circumference
510344865.33731
Perimeter
324895632
Area
6597323230792464
Diagonal
114867952.28254
Surface area
39583939384754784
Volume
5.3586037514415E+23
Space diagonal
140683935.4453
Perimeter
243671724
Area
2.8567247574218E+15
Altitude
70341967.72265
Surface area
2.8567247574218E+15
Volume
6.3151750838933E+22
Height
38289317.427515