21691437 is an odd 8-digits composite number following 21691436
and preceding 21691438 . In scientific notation, it is written as 2.1691437 × 10^7.
The sum of its digits is 33. It has a total of 2 prime factors and 4 positive divisors.
There are 14460956 positive integers (up to 21691437) that are relatively prime to 21691437.
21691437 has 4 divisors, whose sum is 28921920
The reverse of 21691437 is 73419612
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million six hundred ninety-one thousand four hundred thirty-seven
Scientific notation
2.1691437 × 10^7
Engineering notation
2.1691437 × 10^6
Prime Factorization
3 × 7230479
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21691437
Product of the distinct prime numbers
The prime factorization of 21691437 is 3 × 7230479.
Since it has a total of 2 prime factors.
1 , 8 , 26 , 14 , 90 , 422 , 976 , 5962 , 15508 , 26223 , 176705 , 122798 , 1900813 , 3699617 , 50644430 , 25606714 , 502748382 , 110956757 , 7744783187 , 3713460500
n×2
43382874
n×3
65074311
n×4
86765748
n×5
108457185
n÷2
10845718.5
n÷3
7230479
n÷3
5422859.25
n÷5
4338287.4
n2
470518439124969
n3
1.0206221079618E+22
n4
2.213876015566E+29
n5
4.802215211746E+36
2 √n
4657.4066818349
3 √n
278.88775176532
4 √n
68.245195302196
5 √n
29.326326456286
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
-21691436
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 21691437 can be divided by 4 positive divisors.
The sum of these divisors (counting 21691437) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010101111110000101101
3
Ternary
1111211001001120
4
Quaternary
1102233300231
5
Quinary
21023111222
6
Senary
2052531153
8
Octal
122576055
10
Decimal
21691437
12
Duodecimal
7320ab9
16
Hexadecimal
14afc2d
20
Vigesimal
6fb8bh
36
Base36
cwx7x
md5
126aed31c5d4b9955c46577f263febb8
sha1
0d6cb4ed8fea87cb36c81aabbe87ba04bae41978
sha256
67050dc79a9a5ac29993023adbe0a041438d6fa172e3057c1e20088591894477
sha512
877691e7aadfde654b4db9cd6c422b2a6aa62eb6587eb369d81d6a2d72fe880967950c7166ff3747ebe3f9794911b0e0f8881733929569cf79eb341fdd193438
ripemd-160
4a5be241b83d36bcf168f07b86adbc3edeee281c
Diameter
43382874
Circumference
136291318.25001
Area
1.4781772717335E+15
Volume
4.2751718886187E+22
Surface area
5.9127090869342E+15
Circumference
136291318.25001
Perimeter
86765748
Area
470518439124969
Diagonal
30676324.392762
Surface area
2823110634749814
Volume
1.0206221079618E+22
Space diagonal
37570670.973179
Perimeter
65074311
Area
2.0374046061561E+14
Altitude
18785335.48659
Surface area
2.0374046061561E+14
Volume
1.2028146892811E+21
Height
10225441.464254