21531709 is an odd 8-digits prime number following 21531708
and preceding 21531710 . In scientific notation, it is written as 2.1531709 × 10^7.
The sum of its digits is 28. It has a total of 1 prime factors and 2 positive divisors.
There are 21531708 positive integers (up to 21531709) that are relatively prime to 21531709.
21531709 has 2 divisors, whose sum is 21531710
The reverse of 21531709 is 90713512
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million five hundred thirty-one thousand seven hundred nine
Scientific notation
2.1531709 × 10^7
Engineering notation
2.1531709 × 10^6
Prime Factorization
21531709
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21531709
Product of the distinct prime numbers
The prime factorization of 21531709 is 21531709.
Since it has a total of 1 prime factors.
7 , 1 , 81 , 66 , 493 , 881 , 3777 , 5383 , 67141 , 56874 , 678548 , 316587 , 4307428 , 3894464 , 42481031 , 98127482 , 276745052 , 401492613 , 5485635266 , 3994444980
n×2
43063418
n×3
64595127
n×4
86126836
n×5
107658545
n÷2
10765854.5
n÷3
7177236.3333333
n÷3
5382927.25
n÷5
4306341.8
n2
463614492460681
n3
9.9824123398461E+21
n4
2.1493839761957E+29
n5
4.627991030471E+36
2 √n
4640.2272573657
3 √n
278.20152132555
4 √n
68.119213569783
5 √n
29.283008957661
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21531710
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10765855
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4640.2273651191
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999071137
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21531709 can be divided by 2 positive divisors.
The sum of these divisors (counting 21531709) is 21531710, the average is 10765855.
Base
System
Value
2
Binary
1010010001000110000111101
3
Ternary
1111111220221201
4
Quaternary
1102020300331
5
Quinary
21003003314
6
Senary
2045255501
8
Octal
122106075
10
Decimal
21531709
12
Duodecimal
7264591
16
Hexadecimal
1488c3d
20
Vigesimal
6eb959
36
Base36
cthz1
md5
8cd2bef1847e43222d1d81b798edb573
sha1
e8dfccd48343995f2cec2a75b2a85e2685694301
sha256
4d29856f304b5bbd3fbc6b00d09f5f1249e090244b07f27f621382b686ad73ae
sha512
82de94ce05ad8cdbed6cebb463e30b9322b3287432e45265f73d5eb48379f2e8b39e605ede357b28a8796bbee64e9f5d69cbaad949b375208ed7590de6711ad5
ripemd-160
6a2494018ae74fbc640b2e10c3f25cc2324f0b95
Diameter
43063418
Circumference
135287717.62727
Area
1.4564878836122E+15
Volume
4.1814231029286E+22
Surface area
5.8259515344489E+15
Circumference
135287717.62727
Perimeter
86126836
Area
463614492460681
Diagonal
30450434.888871
Surface area
2781686954764086
Volume
9.9824123398461E+21
Space diagonal
37294013.961788
Perimeter
64595127
Area
2.0075096401679E+14
Altitude
18647006.980894
Surface area
2.0075096401679E+14
Volume
1.1764385763509E+21
Height
10150144.962957