20409991 is an odd 8-digits composite number following 20409990
and preceding 20409992 . In scientific notation, it is written as 2.0409991 × 10^7.
The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors.
There are 17494272 positive integers (up to 20409991) that are relatively prime to 20409991.
20409991 has 4 divisors, whose sum is 23325712
The reverse of 20409991 is 19990402
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty million four hundred nine thousand nine hundred ninety-one
Scientific notation
2.0409991 × 10^7
Engineering notation
2.0409991 × 10^6
Prime Factorization
7 × 2915713
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20409991
Product of the distinct prime numbers
The prime factorization of 20409991 is 7 × 2915713.
Since it has a total of 2 prime factors.
9 , 3 , 70 , 94 , 213 , 115 , 6405 , 5728 , 30605 , 91468 , 257470 , 917899 , 2592101 , 8571234 , 51963094 , 49002402 , 547140785 , 369092076 , 7743710170 , 6725761544
n×2
40819982
n×3
61229973
n×4
81639964
n×5
102049955
n÷2
10204995.5
n÷3
6803330.3333333
n÷3
5102497.75
n÷5
4081998.2
n2
416567732620081
n3
8.5021436736663E+21
n4
1.7352867586024E+29
n5
3.5417187125493E+36
2 √n
4517.7418031579
3 √n
273.28404111461
4 √n
67.21414883161
5 √n
28.97133864725
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
-20409990
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 20409991 can be divided by 4 positive divisors.
The sum of these divisors (counting 20409991) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001101110110111010000111
3
Ternary
1102101221020121
4
Quaternary
1031312322013
5
Quinary
20211104431
6
Senary
2005242411
8
Octal
115667207
10
Decimal
20409991
12
Duodecimal
6a03407
16
Hexadecimal
1376e87
20
Vigesimal
67b4jb
36
Base36
c5gg7
md5
f91e0b1132d08f86999c7414f577fb40
sha1
827e880623f6dd5e5bd51e9a06f5950ce3b852f9
sha256
7583a8977f11887759c4d4bac5c60199f411273b66bd5a88198c7c3fe241c1e1
sha512
df5e89c50acc093170646894fa78af98b672ed26412ca0b06c0f8fbb34d0dd54050833b285490420a81f0e249618fcbd5b3984ddb2bae3067e04a734605344dd
ripemd-160
48a00305cd4d7ebb65fc996304d69bd06a55d478
Diameter
40819982
Circumference
128239755.57087
Area
1.3086861285218E+15
Volume
3.561369613994E+22
Surface area
5.2347445140872E+15
Circumference
128239755.57087
Perimeter
81639964
Area
416567732620081
Diagonal
28864086.080113
Surface area
2499406395720486
Volume
8.5021436736663E+21
Space diagonal
35351141.394024
Perimeter
61229973
Area
1.8037911942294E+14
Altitude
17675570.697012
Surface area
1.8037911942294E+14
Volume
1.0019872410453E+21
Height
9621362.0267043