21131894 is an even 8-digits composite number following 21131893
and preceding 21131895 . In scientific notation, it is written as 2.1131894 × 10^7.
The sum of its digits is 29. It has a total of 4 prime factors and 16 positive divisors.
There are 7983360 positive integers (up to 21131894) that are relatively prime to 21131894.
21131894 has 16 divisors, whose sum is 33851520
The reverse of 21131894 is 49813112
Previous prime number is 31
Is Prime? no
Number parity even
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million one hundred thirty-one thousand eight hundred ninety-four
Scientific notation
2.1131894 × 10^7
Engineering notation
2.1131894 × 10^6
Prime Factorization
2 × 11753 × 31 × 29
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21131894
Product of the distinct prime numbers
The prime factorization of 21131894 is 2 × 11753 × 31 × 29.
Since it has a total of 4 prime factors.
1 , 10 , 19 , 14 , 551 , 988 , 249 , 4079 , 56888 , 8972 , 149917 , 857202 , 8191482 , 5844386 , 22076890 , 50817432 , 599752893 , 113373229 , 2460190371 , 1582769074
n×2
42263788
n×3
63395682
n×4
84527576
n×5
105659470
n÷2
10565947
n÷3
7043964.6666667
n÷3
5282973.5
n÷5
4226378.8
n2
446556944027236
n3
9.4365940061475E+21
n4
1.9941310425894E+29
n5
4.213976581411E+36
2 √n
4596.9439848665
3 √n
276.46880871399
4 √n
67.800766845711
5 √n
29.173442856864
1 , 2 , 29 , 31 , 58 , 62 , 899 , 1798 , 11753 , 23506 , 340837 , 364343 , 681674 , 728686 , 10565947 , 21131894
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
-21131893
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 21131894 can be divided by 16 positive divisors.
The sum of these divisors (counting 21131894) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000100111001001110110
3
Ternary
1110202121111202
4
Quaternary
1100213021312
5
Quinary
20402210034
6
Senary
2032532502
8
Octal
120471166
10
Decimal
21131894
12
Duodecimal
70b1132
16
Hexadecimal
1427276
20
Vigesimal
6c19ee
36
Base36
ckxh2
md5
9dc572a1717f8ae2a5bc1c98e2de270a
sha1
d79829144ebeb3d789877d2d25f6d636f31ea889
sha256
aef1ed13a1e6ac22aa26315e0c467abe398fff81703ba5861820f770997b8314
sha512
4e24340329264751fcead75a7ae7d219e624da369036c4e67ab7682d016fe9e16cee771c7d8e31a35b63c81b6a98f2ebb795cee1f03b0b25be06dc480efbe50d
ripemd-160
ce58f4331d214ff2fad53ec05dc157fe1bb76077
Diameter
42263788
Circumference
132775605.89368
Area
1.4029000147655E+15
Volume
3.9527912539497E+22
Surface area
5.6116000590619E+15
Circumference
132775605.89368
Perimeter
84527576
Area
446556944027236
Diagonal
29885011.093431
Surface area
2679341664163416
Volume
9.4365940061475E+21
Space diagonal
36601514.06816
Perimeter
63395682
Area
1.9336482888197E+14
Altitude
18300757.03408
Surface area
1.9336482888197E+14
Volume
1.1121132688419E+21
Height
9961670.3644769