21691709 is an odd 8-digits composite number following 21691708
and preceding 21691710 . In scientific notation, it is written as 2.1691709 × 10^7.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 20023104 positive integers (up to 21691709) that are relatively prime to 21691709.
21691709 has 4 divisors, whose sum is 23360316
The reverse of 21691709 is 90719612
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty-one million six hundred ninety-one thousand seven hundred nine
Scientific notation
2.1691709 × 10^7
Engineering notation
2.1691709 × 10^6
Prime Factorization
13 × 1668593
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21691709
Product of the distinct prime numbers
The prime factorization of 21691709 is 13 × 1668593.
Since it has a total of 2 prime factors.
2 , 1 , 88 , 28 , 704 , 536 , 5312 , 2463 , 86742 , 71221 , 934414 , 536405 , 3815971 , 6612352 , 55876632 , 76572628 , 177770142 , 807159934 , 755620884 , 4910167486
n×2
43383418
n×3
65075127
n×4
86766836
n×5
108458545
n÷2
10845854.5
n÷3
7230569.6666667
n÷3
5422927.25
n÷5
4338341.8
n2
470530239340681
n3
1.0206605027478E+22
n4
2.21398706134E+29
n5
4.8025163064352E+36
2 √n
4657.4358825431
3 √n
278.88891746574
4 √n
68.245409241524
5 √n
29.326400003472
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
-21691708
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 21691709 can be divided by 4 positive divisors.
The sum of these divisors (counting 21691709) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010101111110100111101
3
Ternary
1111211001102122
4
Quaternary
1102233310331
5
Quinary
21023113314
6
Senary
2052532325
8
Octal
122576475
10
Decimal
21691709
12
Duodecimal
73210a5
16
Hexadecimal
14afd3d
20
Vigesimal
6fb959
36
Base36
cwxfh
md5
d99b367796209c3ada6483d4d84863bb
sha1
2e8c13f13408f73ad46ef50c1dcd281dbbfaa031
sha256
4e0f88a85e0cfae3ce99ad1fbf84a2bd29a910615cb2dbdd99377ca741d5bf20
sha512
7bc3dded4b2fc5ebb006e5ccb5a3e6e565d8fd0c9ba6c8788b29bab92a4377228cf83c123d03f49bdd225a1b6c8db87afc08c520058d43e5e092bb9b4edbcb12
ripemd-160
2d0cf0d31b631a689fbe976956478f9932ea0d92
Diameter
43383418
Circumference
136293027.27642
Area
1.4782143432045E+15
Volume
4.2753327163225E+22
Surface area
5.9128573728181E+15
Circumference
136293027.27642
Perimeter
86766836
Area
470530239340681
Diagonal
30676709.058851
Surface area
2823181436044086
Volume
1.0206605027478E+22
Space diagonal
37571142.090999
Perimeter
65075127
Area
2.037455702589E+14
Altitude
18785571.0455
Surface area
2.037455702589E+14
Volume
1.2028599379704E+21
Height
10225569.686284