21342785 is an odd 8-digits composite number following 21342784
and preceding 21342786 . In scientific notation, it is written as 2.1342785 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 17074224 positive integers (up to 21342785) that are relatively prime to 21342785.
21342785 has 4 divisors, whose sum is 25611348
The reverse of 21342785 is 58724312
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-one million three hundred forty-two thousand seven hundred eighty-five
Scientific notation
2.1342785 × 10^7
Engineering notation
2.1342785 × 10^6
Prime Factorization
5 × 4268557
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21342785
Product of the distinct prime numbers
The prime factorization of 21342785 is 5 × 4268557.
Since it has a total of 2 prime factors.
8 , 9 , 71 , 70 , 153 , 802 , 3490 , 55 , 56420 , 84797 , 778781 , 868288 , 7850610 , 4021324 , 81326424 , 78960466 , 674626603 , 608695606 , 697607171 , 4267094857
n×2
42685570
n×3
64028355
n×4
85371140
n×5
106713925
n÷2
10671392.5
n÷3
7114261.6666667
n÷3
5335696.25
n÷5
4268557
n2
455514471556225
n3
9.7219474308131E+21
n4
2.0749343379715E+29
n5
4.4284877464442E+36
2 √n
4619.8252131439
3 √n
277.38546256562
4 √n
67.969296105991
5 √n
29.231440523795
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
-21342784
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 21342785 can be divided by 4 positive divisors.
The sum of these divisors (counting 21342785) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001011010101001000001
3
Ternary
1111011022210112
4
Quaternary
1101122221001
5
Quinary
20430432120
6
Senary
2041241105
8
Octal
121325101
10
Decimal
21342785
12
Duodecimal
7193195
16
Hexadecimal
145aa41
20
Vigesimal
6d7gj5
36
Base36
cpg75
md5
549e09572031e1fd1bc49ed1655f1944
sha1
721f4ee0a47aa9b0623b61ca01c1ba485ee87027
sha256
180bd9339501ea59a91be77c9bd512f4f01adbd384d34c99549cd84616eeccfd
sha512
7df40b88268ca85adcd0887164b9b9b719e1ec53fe7f985692a7c1ddcbbb0eb772c6dfcf1bf6e7347bf1d9e437fa37de224f181671002892b39ac8a1dbc085a7
ripemd-160
8a43a964c4227445753407d06e3553d18093c543
Diameter
42685570
Circumference
134100673.12629
Area
1.4310409174449E+15
Volume
4.0723198169638E+22
Surface area
5.7241636697795E+15
Circumference
134100673.12629
Perimeter
85371140
Area
455514471556225
Diagonal
30183256.005813
Surface area
2733086829337350
Volume
9.7219474308131E+21
Space diagonal
36966787.995019
Perimeter
64028355
Area
1.9724355207957E+14
Altitude
18483393.997509
Surface area
1.9724355207957E+14
Volume
1.1457424924445E+21
Height
10061085.335271