21494887 is an odd 8-digits composite number following 21494886
and preceding 21494888 . In scientific notation, it is written as 2.1494887 × 10^7.
The sum of its digits is 43. It has a total of 3 prime factors and 8 positive divisors.
There are 20664000 positive integers (up to 21494887) that are relatively prime to 21494887.
21494887 has 8 divisors, whose sum is 22332240
The reverse of 21494887 is 78849412
Previous prime number is 251
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
twenty-one million four hundred ninety-four thousand eight hundred eighty-seven
Scientific notation
2.1494887 × 10^7
Engineering notation
2.1494887 × 10^6
Prime Factorization
29 × 251 × 2953
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21494887
Product of the distinct prime numbers
The prime factorization of 21494887 is 29 × 251 × 2953.
Since it has a total of 3 prime factors.
5 , 7 , 77 , 2 , 640 , 191 , 9434 , 3029 , 93849 , 76637 , 211796 , 241685 , 742717 , 9672198 , 3238147 , 95694339 , 561347462 , 276872413 , 1605019679 , 9017772399
n×2
42989774
n×3
64484661
n×4
85979548
n×5
107474435
n÷2
10747443.5
n÷3
7164962.3333333
n÷3
5373721.75
n÷5
4298977.4
n2
462030167142769
n3
9.9312862333249E+21
n4
2.1347187534998E+29
n5
4.5885538383258E+36
2 √n
4636.2578659949
3 √n
278.04284400835
4 √n
68.090071713833
5 √n
29.272986554903
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21494886
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21494887 can be divided by 8 positive divisors.
The sum of these divisors (counting 21494887) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111111110001100111
3
Ternary
1111110001102221
4
Quaternary
1101333301213
5
Quinary
21000314022
6
Senary
2044413211
8
Octal
121776147
10
Decimal
21494887
12
Duodecimal
7247207
16
Hexadecimal
147fc67
20
Vigesimal
6e6h47
36
Base36
cspk7
md5
6e244e06a629587cb6d5bd08e725ade4
sha1
c57964f5a42e91efffb4f0250c2e30118e37ec02
sha256
b02e3bce9d0395b30742720b9c727f69a10a18b5618ac1142a5e61ec53a8515b
sha512
2eca5ed3b7867bc8d7ef7503d16677e1c93377f64c90d2d8cb76bf63863bd1160bbbbd1fe7a608a06fb2e7b1ff5525f39b5a066a37f561cd5213c54e2beb7cc8
ripemd-160
e176e872fd57fcdb4a58c74d7cd3c500cd9594c5
Diameter
42989774
Circumference
135056358.17789
Area
1.4515105788326E+15
Volume
4.1600074495081E+22
Surface area
5.8060423153303E+15
Circumference
135056358.17789
Perimeter
85979548
Area
462030167142769
Diagonal
30398360.717077
Surface area
2772181002856614
Volume
9.9312862333249E+21
Space diagonal
37230236.386952
Perimeter
64484661
Area
2.000649310302E+14
Altitude
18615118.193476
Surface area
2.000649310302E+14
Volume
1.1704133069148E+21
Height
10132786.905692