21105879 is an odd 8-digits composite number following 21105878
and preceding 21105880 . In scientific notation, it is written as 2.1105879 × 10^7.
The sum of its digits is 33. It has a total of 2 prime factors and 4 positive divisors.
There are 14070584 positive integers (up to 21105879) that are relatively prime to 21105879.
21105879 has 4 divisors, whose sum is 28141176
The reverse of 21105879 is 97850112
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 one hundred five thousand eight hundred seventy-nine
Scientific notation
2.1105879 × 10^7
Engineering notation
2.1105879 × 10^6
Prime Factorization
3 × 7035293
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21105879
Product of the distinct prime numbers
The prime factorization of 21105879 is 3 × 7035293.
Since it has a total of 2 prime factors.
1 , 8 , 27 , 75 , 891 , 660 , 1942 , 909 , 84183 , 27349 , 926047 , 591475 , 2075624 , 621862 , 33735327 , 62456844 , 630130471 , 104978519 , 9470772188 , 9530194679
n×2
42211758
n×3
63317637
n×4
84423516
n×5
105529395
n÷2
10552939.5
n÷3
7035293
n÷3
5276469.75
n÷5
4221175.8
n2
445458128362641
n3
9.4017853567884E+21
n4
1.9843294412435E+29
n5
4.1881017083022E+36
2 √n
4594.1135162292
3 √n
276.35531061297
4 √n
67.779890205202
5 √n
29.166256363109
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
-21105878
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 21105879 can be divided by 4 positive divisors.
The sum of these divisors (counting 21105879) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100000110011010111
3
Ternary
1110201021211020
4
Quaternary
1100200303113
5
Quinary
20400342004
6
Senary
2032212223
8
Octal
120406327
10
Decimal
21105879
12
Duodecimal
709a073
16
Hexadecimal
1420cd7
20
Vigesimal
6bi4dj
36
Base36
ckdef
md5
5f1fde8d5a09ad638eb93fe078072f77
sha1
5f890411fa511081d9ba64ea73a0b701724e1c0a
sha256
a5f9de26516f17604d771241be6be8822eeab519d0e0a9bbadb5b22efc0e523d
sha512
5d91bece516f4cc94aa187fa70b2e23b8ce2ef773b4dd1b79d7cfe06c39916b0416f1c32fffbc360a2c7b2ff278a97faf9a69f81620aaa01dd290276cddf2a3d
ripemd-160
313cd6c95a3bde235d91bdd7cb429921cb8571ae
Diameter
42211758
Circumference
132612148.82791
Area
1.3994479835459E+15
Volume
3.9382106410019E+22
Surface area
5.5977919341837E+15
Circumference
132612148.82791
Perimeter
84423516
Area
445458128362641
Diagonal
29848220.327606
Surface area
2672748770175846
Volume
9.4017853567884E+21
Space diagonal
36556454.766401
Perimeter
63317637
Area
1.9288902774216E+14
Altitude
18278227.383201
Surface area
1.9288902774216E+14
Volume
1.1080110301742E+21
Height
9949406.7758685