81668052 is an even 8-digits composite number following 81668051
and preceding 81668053 . In scientific notation, it is written as 8.1668052 × 10^7.
The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors.
There are 27222672 positive integers (up to 81668052) that are relatively prime to 81668052.
81668052 has 12 divisors, whose sum is 158799060
The reverse of 81668052 is 25086618
Previous prime number is 9
Is Prime? no
Number parity even
Number length 8
Sum of Digits 36
Digital Root 9
Name
eighty-one million six hundred sixty-eight thousand fifty-two
Scientific notation
8.1668052 × 10^7
Engineering notation
8.1668052 × 10^6
Prime Factorization
2 × 2 × 9 × 2268557
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
40834026
Product of the distinct prime numbers
The prime factorization of 81668052 is 2 × 2 × 9 × 2268557.
Since it has a total of 4 prime factors.
3 , 9 , 52 , 78 , 47 , 906 , 9752 , 4489 , 7363 , 96795 , 365130 , 551413 , 9341782 , 7523659 , 10565924 , 24818572 , 155206268 , 495806400 , 7670278580 , 4353448707
n×2
163336104
n×3
245004156
n×4
326672208
n×5
408340260
n÷2
40834026
n÷3
27222684
n÷3
20417013
n÷5
16333610.4
n2
6669670717474704
n3
5.446990149776E+23
n4
4.448450747954E+31
n5
3.6329630700334E+39
2 √n
9037.0377890103
3 √n
433.86111917478
4 √n
95.063335671595
5 √n
38.230540609823
1 , 2 , 4 , 9 , 18 , 36 , 2268557 , 4537114 , 9074228 , 20417013 , 40834026 , 81668052
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
-81668051
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 81668052 can be divided by 12 positive divisors.
The sum of these divisors (counting 81668052) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100110111100010011111010100
3
Ternary
12200200011111200
4
Quaternary
10313202133110
5
Quinary
131401334202
6
Senary
12034232500
8
Octal
467423724
10
Decimal
81668052
12
Duodecimal
23425730
16
Hexadecimal
4de27d4
20
Vigesimal
15a8a2c
36
Base36
1cmfh0
md5
992ba212c287234e9d4ba474232133f1
sha1
672a94c72627f6fbf84e84ffdc4e736ed9b07f77
sha256
66932433c038427d7cf7110de20fca5efd00b8927df63e04101e954abd4c3e4a
sha512
b9ef840597b9798e172b90d9894960187faa65c3a6a25b7fa7dcb974721b7b0136e2291e4c7f49ebce3b11f6963a81e58b6b90aa8beb3aa572f2285de10646dd
ripemd-160
f14b1c5ee935073be367d9b67841d1f3d91e6155
Diameter
163336104
Circumference
513135504.39238
Area
2.0953388527881E+16
Volume
2.281629898495E+24
Surface area
8.3813554111526E+16
Circumference
513135504.39238
Perimeter
326672208
Area
6669670717474704
Diagonal
115496066.75099
Surface area
40018024304848224
Volume
5.446990149776E+23
Space diagonal
141453215.41918
Perimeter
245004156
Area
2.8880521381051E+15
Altitude
70726607.709589
Surface area
2.8880521381051E+15
Volume
6.4193394532716E+22
Height
38498688.916997