20128621 is an odd 8-digits composite number following 20128620
and preceding 20128622 . In scientific notation, it is written as 2.0128621 × 10^7.
The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors.
There are 20119644 positive integers (up to 20128621) that are relatively prime to 20128621.
20128621 has 4 divisors, whose sum is 20137600
The reverse of 20128621 is 12682102
Previous prime number is 4639
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty million one hundred twenty-eight thousand six hundred twenty-one
Scientific notation
2.0128621 × 10^7
Engineering notation
2.0128621 × 10^6
Prime Factorization
4639 × 4339
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20128621
Product of the distinct prime numbers
The prime factorization of 20128621 is 4639 × 4339.
Since it has a total of 2 prime factors.
2 , 2 , 57 , 17 , 597 , 572 , 5002 , 8094 , 37128 , 29886 , 363738 , 679343 , 6799163 , 7151359 , 4085924 , 21983428 , 897670867 , 32111627 , 1536731801 , 7209715733
n×2
40257242
n×3
60385863
n×4
80514484
n×5
100643105
n÷2
10064310.5
n÷3
6709540.3333333
n÷3
5032155.25
n÷5
4025724.2
n2
405161383361641
n3
8.1553399295222E+21
n4
1.6415574656752E+29
n5
3.3042288076296E+36
2 √n
4486.4931739612
3 √n
272.02240389999
4 √n
66.9812897305
5 √n
28.891015317366
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
-20128620
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 20128621 can be divided by 4 positive divisors.
The sum of these divisors (counting 20128621) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110010001101101101
3
Ternary
1101212122021111
4
Quaternary
1030302031231
5
Quinary
20123103441
6
Senary
1555232021
8
Octal
114621555
10
Decimal
20128621
12
Duodecimal
68a8611
16
Hexadecimal
133236d
20
Vigesimal
65g1b1
36
Base36
bzfcd
md5
714dc9cc6641f920166ec26ae64e96df
sha1
8aa76e014585e2173c81bc0e175bd4b153c0e1c3
sha256
f8dd6c5a111cf98f614860b922f0bfd6a0412a82dd20d0a53db94e233219a001
sha512
0398b8bd1d977fe9d60e1c2db507f2cc4bf83e7b683a714944ccc70d45624c772c541b78dd997e9f666ee1d558946963d28e7a10ef25c747596288bc081dadeb
ripemd-160
9ee1322af56c9516f26219f8e77a1db4e3c1a249
Diameter
40257242
Circumference
126471855.72099
Area
1.2728520254872E+15
Volume
3.4161008013486E+22
Surface area
5.0914081019488E+15
Circumference
126471855.72099
Perimeter
80514484
Area
405161383361641
Diagonal
28466168.810068
Surface area
2430968300169846
Volume
8.1553399295222E+21
Space diagonal
34863794.258298
Perimeter
60385863
Area
1.7544002531181E+14
Altitude
17431897.129149
Surface area
1.7544002531181E+14
Volume
9.6111602784109E+20
Height
9488722.9366893