21689907 is an odd 8-digits composite number following 21689906
and preceding 21689908 . In scientific notation, it is written as 2.1689907 × 10^7.
The sum of its digits is 42. It has a total of 2 prime factors and 4 positive divisors.
There are 14459936 positive integers (up to 21689907) that are relatively prime to 21689907.
21689907 has 4 divisors, whose sum is 28919880
The reverse of 21689907 is 70998612
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty-one million six hundred eighty-nine thousand nine hundred seven
Scientific notation
2.1689907 × 10^7
Engineering notation
2.1689907 × 10^6
Prime Factorization
3 × 7229969
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21689907
Product of the distinct prime numbers
The prime factorization of 21689907 is 3 × 7229969.
Since it has a total of 2 prime factors.
8 , 9 , 57 , 43 , 479 , 127 , 4054 , 2199 , 7470 , 9278 , 703951 , 656656 , 5274054 , 9059508 , 62714431 , 28696633 , 956756285 , 522826651 , 1318369215 , 6416799869
n×2
43379814
n×3
65069721
n×4
86759628
n×5
108449535
n÷2
10844953.5
n÷3
7229969
n÷3
5422476.75
n÷5
4337981.4
n2
470452065668649
n3
1.0204061552311E+22
n4
2.213251460919E+29
n5
4.8005218354947E+36
2 √n
4657.2424244396
3 √n
278.8811945189
4 √n
68.243991855984
5 √n
29.325912739615
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21689906
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21689907 can be divided by 4 positive divisors.
The sum of these divisors (counting 21689907) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010101111011000110011
3
Ternary
1111210221221220
4
Quaternary
1102233120303
5
Quinary
21023034112
6
Senary
2052520123
8
Octal
122573063
10
Decimal
21689907
12
Duodecimal
7320043
16
Hexadecimal
14af633
20
Vigesimal
6fb4f7
36
Base36
cww1f
md5
e889b09099278330bba580c8f6f8b4a7
sha1
b833428b24d151a120a964767536aa19be10a348
sha256
7b2829df3f5a09b297efdc96a18aa88f6e79892f2081b5b22a1d2776d96731e5
sha512
2537a63bac24964854c8e815ab04c6b933deded99e071ea863950872c3b7ebaf03069e8cfea9a0aef9f52dff13412e7fa325176afdad0fe4482ac72201d7bd99
ripemd-160
4c0f4b0121b45c16af9e26742a22e65783daa065
Diameter
43379814
Circumference
136281704.97649
Area
1.4779687533708E+15
Volume
4.2742673079357E+22
Surface area
5.9118750134831E+15
Circumference
136281704.97649
Perimeter
86759628
Area
470452065668649
Diagonal
30674160.646011
Surface area
2822712394011894
Volume
1.0204061552311E+22
Space diagonal
37568020.935444
Perimeter
65069721
Area
2.0371172006596E+14
Altitude
18784010.467722
Surface area
2.0371172006596E+14
Volume
1.2025601865473E+21
Height
10224720.215337