21085930 is an even 8-digits composite number following 21085929
and preceding 21085931 . In scientific notation, it is written as 2.1085930 × 10^7.
The sum of its digits is 28. It has a total of 4 prime factors and 16 positive divisors.
There are 8206272 positive integers (up to 21085930) that are relatively prime to 21085930.
21085930 has 16 divisors, whose sum is 38981160
The reverse of 21085930 is 03958012
Previous prime number is 37
Is Prime? no
Number parity even
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million eighty-five thousand nine hundred thirty
Scientific notation
2.1085930 × 10^7
Engineering notation
2.1085930 × 10^6
Prime Factorization
2 × 5 × 37 × 56989
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21085930
Product of the distinct prime numbers
The prime factorization of 21085930 is 2 × 5 × 37 × 56989.
Since it has a total of 4 prime factors.
10 , 6 , 81 , 37 , 941 , 585 , 6704 , 5130 , 36047 , 13472 , 49097 , 883839 , 6957637 , 8039138 , 67898037 , 97896651 , 485186079 , 189839123 , 8277327551 , 7856743049
n×2
42171860
n×3
63257790
n×4
84343720
n×5
105429650
n÷2
10542965
n÷3
7028643.3333333
n÷3
5271482.5
n÷5
4217186
n2
444616443964900
n3
9.3751512142928E+21
n4
1.9768378224399E+29
n5
4.1683463945321E+36
2 √n
4591.9418550326
3 √n
276.26821402807
4 √n
67.763868359418
5 √n
29.160740764814
1 , 2 , 5 , 10 , 37 , 74 , 185 , 370 , 56989 , 113978 , 284945 , 569890 , 2108593 , 4217186 , 10542965 , 21085930
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21085929
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21085930 can be divided by 16 positive divisors.
The sum of these divisors (counting 21085930) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000011011111011101010
3
Ternary
1110200021110101
4
Quaternary
1100123323222
5
Quinary
20344222210
6
Senary
2031540014
8
Octal
120337352
10
Decimal
21085930
12
Duodecimal
708a60a
16
Hexadecimal
141beea
20
Vigesimal
6bfega
36
Base36
cjy0a
md5
93a5f657dda3a9b32bfefc1bc1129cb2
sha1
01e85c421af128bbd48cad166bc638b9b6f26dd3
sha256
b2ba4bb9842c005e31fd8767412ecc84adf090c1ded450b520a55675ada74fa2
sha512
71dd6b40cd48877242be2a4dc48d62f95343ed5d05919604d8043e104567bcfbc1a4acd42dd099c8cba46e184dabf593e3ce5a6ac5a5d0b2e5ecdaea52faf9e0
ripemd-160
23a7fc9d6b30f49ddb335999275a222e9a86a9cc
Diameter
42171860
Circumference
132486805.56422
Area
1.3968037540253E+15
Volume
3.9270541574821E+22
Surface area
5.5872150161014E+15
Circumference
132486805.56422
Perimeter
84343720
Area
444616443964900
Diagonal
29820008.18125
Surface area
2667698663789400
Volume
9.3751512142928E+21
Space diagonal
36521902.084841
Perimeter
63257790
Area
1.9252456770695E+14
Altitude
18260951.04242
Surface area
1.9252456770695E+14
Volume
1.1048721663793E+21
Height
9940002.7270832