21681186 is an even 8-digits composite number following 21681185
and preceding 21681187 . In scientific notation, it is written as 2.1681186 × 10^7.
The sum of its digits is 33. It has a total of 5 prime factors and 32 positive divisors.
There are 6967296 positive integers (up to 21681186) that are relatively prime to 21681186.
21681186 has 32 divisors, whose sum is 44943360
The reverse of 21681186 is 68118612
Previous prime number is 127
Is Prime? no
Number parity even
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million six hundred eighty-one thousand one hundred eighty-six
Scientific notation
2.1681186 × 10^7
Engineering notation
2.1681186 × 10^6
Prime Factorization
2 × 3 × 37 × 127 × 769
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
21681186
Product of the distinct prime numbers
The prime factorization of 21681186 is 2 × 3 × 37 × 127 × 769.
Since it has a total of 5 prime factors.
9 , 7 , 17 , 78 , 651 , 12 , 299 , 5514 , 83184 , 85621 , 854601 , 93812 , 8028860 , 7390903 , 49517999 , 8482604 , 835748571 , 422189238 , 4791221756 , 1410665041
n×2
43362372
n×3
65043558
n×4
86724744
n×5
108405930
n÷2
10840593
n÷3
7227062
n÷3
5420296.5
n÷5
4336237.2
n2
470073826366596
n3
1.0191758063186E+22
n4
2.2096940223493E+29
n5
4.7908787101644E+36
2 √n
4656.3060466426
3 √n
278.84381232486
4 √n
68.237130996566
5 √n
29.323554108686
1 , 2 , 3 , 6 , 37 , 74 , 111 , 127 , 222 , 254 , 381 , 762 , 769 , 1538 , 2307 , 4614 , 4699 , 9398 , 14097 , 28194 , 28453 , 56906 , 85359 , 97663 , 170718 , 195326 , 292989 , 585978 , 3613531 , 7227062 , 10840593 , 21681186
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21681185
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21681186 can be divided by 32 positive divisors.
The sum of these divisors (counting 21681186) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1010010101101010000100010
3
Ternary
1111210111222220
4
Quaternary
1102231100202
5
Quinary
21022244221
6
Senary
2052411510
8
Octal
122552042
10
Decimal
21681186
12
Duodecimal
7316b96
16
Hexadecimal
14ad422
20
Vigesimal
6fa2j6
36
Base36
cwpb6
md5
777e4c8c520ae82d4af7f83e67ff97cc
sha1
3ca53bf12eb0e115ae5765835ce03d238d9bec01
sha256
9e6667bd42f770177d753988264b21e3c09a9def1030ebe997f3572540bbf007
sha512
c5fa726c61fa542705bc95a67f2f0e8be3b845e990a90cac53e6d3606ac4476a194e61a5def6e0144b867864a47752bcff823f6ef15d6362fa76c3379d6a64e6
ripemd-160
0d98c041e7849f3fc2b2da4adfc8591e9a2cb60f
Diameter
43362372
Circumference
136226909.31743
Area
1.4767804795581E+15
Volume
4.2691136344626E+22
Surface area
5.9071219182326E+15
Circumference
136226909.31743
Perimeter
86724744
Area
470073826366596
Diagonal
30661827.289534
Surface area
2820442958199576
Volume
1.0191758063186E+22
Space diagonal
37552915.720351
Perimeter
65043558
Area
2.0354793764381E+14
Altitude
18776457.860176
Surface area
2.0354793764381E+14
Volume
1.2011102064486E+21
Height
10220609.096511