21691211 is an odd 8-digits composite number following 21691210
and preceding 21691212 . In scientific notation, it is written as 2.1691211 × 10^7.
The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors.
There are 21639024 positive integers (up to 21691211) that are relatively prime to 21691211.
21691211 has 4 divisors, whose sum is 21743400
The reverse of 21691211 is 11219612
Previous prime number is 419
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty-one million six hundred ninety-one thousand two hundred eleven
Scientific notation
2.1691211 × 10^7
Engineering notation
2.1691211 × 10^6
Prime Factorization
419 × 51769
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21691211
Product of the distinct prime numbers
The prime factorization of 21691211 is 419 × 51769.
Since it has a total of 2 prime factors.
1 , 7 , 31 , 48 , 20 , 214 , 6010 , 2846 , 5184 , 75566 , 228116 , 666028 , 5675473 , 1500620 , 87602075 , 82880990 , 326135755 , 833636372 , 2697422840 , 5463801695
n×2
43382422
n×3
65073633
n×4
86764844
n×5
108456055
n÷2
10845605.5
n÷3
7230403.6666667
n÷3
5422802.75
n÷5
4338242.2
n2
470508634646521
n3
1.020590207144E+22
n4
2.2137837527693E+29
n5
4.8019650489691E+36
2 √n
4657.3824193424
3 √n
278.88678319801
4 √n
68.245017542253
5 √n
29.326265346665
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
-21691210
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 21691211 can be divided by 4 positive divisors.
The sum of these divisors (counting 21691211) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010101111101101001011
3
Ternary
1111211000202012
4
Quaternary
1102233231023
5
Quinary
21023104321
6
Senary
2052530135
8
Octal
122575513
10
Decimal
21691211
12
Duodecimal
732094b
16
Hexadecimal
14afb4b
20
Vigesimal
6fb80b
36
Base36
cwx1n
md5
6092d028c6ad692a8968b9c7732b9abe
sha1
19b0f95945bb176778576a457fd30e27f08ced48
sha256
dbab6642aacedaac1bad438e385ae2f87f7446ed63e653a8a741aa6aee488c93
sha512
5596b06ea88bff341d2898190a2df7caeaeef9dc44573aac2599c4227bcc491ca4cdde0fa52d67cb5d2d6692043af18408441a6dac16cd5a74a3fe278f71b134
ripemd-160
148d5731bd335a0421969d283701ffe7321b63c7
Diameter
43382422
Circumference
136289898.25013
Area
1.4781464700561E+15
Volume
4.2750382627855E+22
Surface area
5.9125858802243E+15
Circumference
136289898.25013
Perimeter
86764844
Area
470508634646521
Diagonal
30676004.780496
Surface area
2823051807879126
Volume
1.020590207144E+22
Space diagonal
37570279.529697
Perimeter
65073633
Area
2.0373621515191E+14
Altitude
18785139.764848
Surface area
2.0373621515191E+14
Volume
1.2027770938068E+21
Height
10225334.926832