21691825 is an odd 8-digits composite number following 21691824
and preceding 21691826 . In scientific notation, it is written as 2.1691825 × 10^7.
The sum of its digits is 34. It has a total of 4 prime factors and 12 positive divisors.
There are 16439760 positive integers (up to 21691825) that are relatively prime to 21691825.
21691825 has 12 divisors, whose sum is 28314160
The reverse of 21691825 is 52819612
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million six hundred ninety-one thousand eight hundred twenty-five
Scientific notation
2.1691825 × 10^7
Engineering notation
2.1691825 × 10^6
Prime Factorization
5 × 5 × 19 × 45667
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
4338365
Product of the distinct prime numbers
The prime factorization of 21691825 is 5 × 5 × 19 × 45667.
Since it has a total of 4 prime factors.
1 , 10 , 85 , 51 , 471 , 184 , 407 , 850 , 841 , 30996 , 722559 , 571362 , 4811237 , 3247690 , 78118329 , 26413368 , 204015867 , 83371556 , 8783442350 , 6223587033
n×2
43383650
n×3
65075475
n×4
86767300
n×5
108459125
n÷2
10845912.5
n÷3
7230608.3333333
n÷3
5422956.25
n÷5
4338365
n2
470535271830625
n3
1.0206768772877E+22
n4
2.2140344203672E+29
n5
4.8026447190582E+36
2 √n
4657.4483357306
3 √n
278.88941459972
4 √n
68.245500479743
5 √n
29.326431368959
1 , 5 , 19 , 25 , 95 , 475 , 45667 , 228335 , 867673 , 1141675 , 4338365 , 21691825
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21691824
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21691825 can be divided by 12 positive divisors.
The sum of these divisors (counting 21691825) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010010101111110110110001
3
Ternary
1111211001120221
4
Quaternary
1102233312301
5
Quinary
21023114300
6
Senary
2052533041
8
Octal
122576661
10
Decimal
21691825
12
Duodecimal
7321181
16
Hexadecimal
14afdb1
20
Vigesimal
6fb9b5
36
Base36
cwxip
md5
9cec7bbffbc060b66ce8f66baccf8f6b
sha1
b35cc0a4ddab1fb001292655b5f38ec3c32d69bd
sha256
eb9ee901ec38df494637eb1ee680f0001b268e7c3d603e8940fc672ff08d37f8
sha512
5a4097748c243310457354e20cd75cf8b7fee8cbdc8fcf89f080e46b2996a814d936a59f7f161479f6882ac408f0d3ccaaf5574631ff0c3be7e5fb78a8cb0845
ripemd-160
1e3fb9bb88521894283451a9b790978f4ff13691
Diameter
43383650
Circumference
136293756.12591
Area
1.478230153238E+15
Volume
4.2754013058348E+22
Surface area
5.9129206129519E+15
Circumference
136293756.12591
Perimeter
86767300
Area
470535271830625
Diagonal
30676873.107624
Surface area
2823211630983750
Volume
1.0206768772877E+22
Space diagonal
37571343.008893
Perimeter
65075475
Area
2.0374774939097E+14
Altitude
18785671.504446
Surface area
2.0374774939097E+14
Volume
1.2028792355508E+21
Height
10225624.369208