20998957 is an odd 8-digits composite number following 20998956
and preceding 20998958 . In scientific notation, it is written as 2.0998957 × 10^7.
The sum of its digits is 49. It has a total of 2 prime factors and 4 positive divisors.
There are 17999100 positive integers (up to 20998957) that are relatively prime to 20998957.
20998957 has 4 divisors, whose sum is 23998816
The reverse of 20998957 is 75989902
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 49
Digital Root 4
Name
twenty million nine hundred ninety-eight thousand nine hundred fifty-seven
Scientific notation
2.0998957 × 10^7
Engineering notation
2.0998957 × 10^6
Prime Factorization
7 × 2999851
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20998957
Product of the distinct prime numbers
The prime factorization of 20998957 is 7 × 2999851.
Since it has a total of 2 prime factors.
8 , 1 , 29 , 60 , 458 , 47 , 4223 , 8914 , 87916 , 24744 , 90419 , 395273 , 935129 , 7832604 , 8411550 , 85813817 , 677990110 , 948598147 , 3233267016 , 7635362810
n×2
41997914
n×3
62996871
n×4
83995828
n×5
104994785
n÷2
10499478.5
n÷3
6999652.3333333
n÷3
5249739.25
n÷5
4199791.4
n2
440956195087849
n3
9.2596201795334E+21
n4
1.9444236598635E+29
n5
4.0830868823257E+36
2 √n
4582.461892913
3 √n
275.88785001024
4 √n
67.693883718642
5 √n
29.136645153128
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
-20998956
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 20998957 can be divided by 4 positive divisors.
The sum of these divisors (counting 20998957) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000110101100101101
3
Ternary
1110111212011011
4
Quaternary
1100012230231
5
Quinary
20333431312
6
Senary
2030025221
8
Octal
120065455
10
Decimal
20998957
12
Duodecimal
7048211
16
Hexadecimal
1406b2d
20
Vigesimal
6b4h7h
36
Base36
ci2wd
md5
039f23cbfce05ded7c9c11ed20598406
sha1
0ce89fb22b06bcc44ea2898479ac1f98f554c561
sha256
dee9964955f132f0e146dfc8eb758d0343803bba9b64b7c5614794f6dc0655e0
sha512
cb26388592f080355d3161ab425692831c01ca1eea4ebe8d5738f07d2ac6651620437fd832e7b6a93554666ca3d0bd0c2999f4b2a6f60716a4d7702dfc0962aa
ripemd-160
f08921ed317445402fef3ef28bc240e53edeaf49
Diameter
41997914
Circumference
131940338.0885
Area
1.3853047430429E+15
Volume
3.8786606308072E+22
Surface area
5.5412189721716E+15
Circumference
131940338.0885
Perimeter
83995828
Area
440956195087849
Diagonal
29697009.785089
Surface area
2645737170527094
Volume
9.2596201795334E+21
Space diagonal
36371260.429954
Perimeter
62996871
Area
1.909396334511E+14
Altitude
18185630.214977
Surface area
1.909396334511E+14
Volume
1.09125670336E+21
Height
9899003.2616965