21007265 is an odd 8-digits composite number following 21007264
and preceding 21007266 . In scientific notation, it is written as 2.1007265 × 10^7.
The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors.
There are 16656640 positive integers (up to 21007265) that are relatively prime to 21007265.
21007265 has 8 divisors, whose sum is 25432488
The reverse of 21007265 is 56270012
Previous prime number is 113
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty-one million seven thousand two hundred sixty-five
Scientific notation
2.1007265 × 10^7
Engineering notation
2.1007265 × 10^6
Prime Factorization
5 × 113 × 37181
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21007265
Product of the distinct prime numbers
The prime factorization of 21007265 is 5 × 113 × 37181.
Since it has a total of 3 prime factors.
8 , 7 , 3 , 8 , 621 , 935 , 7939 , 6692 , 86471 , 41960 , 355879 , 743170 , 9580205 , 2878505 , 7157388 , 7025748 , 288211380 , 488002614 , 3006019893 , 3149714499
n×2
42014530
n×3
63021795
n×4
84029060
n×5
105036325
n÷2
10503632.5
n÷3
7002421.6666667
n÷3
5251816.25
n÷5
4201453
n2
441305182780225
n3
9.2706149205376E+21
n4
1.9475026434869E+29
n5
4.0911704119929E+36
2 √n
4583.3683028969
3 √n
275.92422918289
4 √n
67.700578305483
5 √n
29.138950305223
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
-21007264
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 21007265 can be divided by 8 positive divisors.
The sum of these divisors (counting 21007265) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001000101110100001
3
Ternary
1110112021112212
4
Quaternary
1100020232201
5
Quinary
20334213030
6
Senary
2030131505
8
Octal
120105641
10
Decimal
21007265
12
Duodecimal
7050b95
16
Hexadecimal
1408ba1
20
Vigesimal
6b5i35
36
Base36
ci9b5
md5
967586a42023597104dc779a368c4282
sha1
e6a868b8fe5841eafe7823cd81fc041f25c9f2cd
sha256
13bd80e8d82f8073c246e04df301bca5268209c460ff5d68ec472eeac733c968
sha512
33ab55b6930e1ca0f83362ee9b0825ae9f5c8b0f2306c694a7d0598d7abc45fb7705459b22f6f02478183d01ea23a7ed1ef4f21920cb8e329b2055742c53fa64
ripemd-160
d9a969f93c55e5b0a4b8f122cf035459c8297e3d
Diameter
42014530
Circumference
131992538.79203
Area
1.3864011202135E+15
Volume
3.8832660971495E+22
Surface area
5.5456044808538E+15
Circumference
131992538.79203
Perimeter
84029060
Area
441305182780225
Diagonal
29708759.071366
Surface area
2647831096681350
Volume
9.2706149205376E+21
Space diagonal
36385650.308063
Perimeter
63021795
Area
1.910907495547E+14
Altitude
18192825.154032
Surface area
1.910907495547E+14
Volume
1.0925524460136E+21
Height
9902919.6904552