20912997 is an odd 8-digits composite number following 20912996
and preceding 20912998 . In scientific notation, it is written as 2.0912997 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 11923200 positive integers (up to 20912997) that are relatively prime to 20912997.
20912997 has 8 divisors, whose sum is 21958552
The reverse of 20912997 is 79921902
Previous prime number is 601
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty million nine hundred twelve thousand nine hundred ninety-seven
Scientific notation
2.0912997 × 10^7
Engineering notation
2.0912997 × 10^6
Prime Factorization
21 × 601 × 1657
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20912997
Product of the distinct prime numbers
The prime factorization of 20912997 is 21 × 601 × 1657.
Since it has a total of 3 prime factors.
10 , 3 , 31 , 8 , 496 , 236 , 4483 , 1518 , 60073 , 28247 , 182154 , 258111 , 8792701 , 1343495 , 38865141 , 98194250 , 135682981 , 188158850 , 6286958256 , 9337642488
n×2
41825994
n×3
62738991
n×4
83651988
n×5
104564985
n÷2
10456498.5
n÷3
6970999
n÷3
5228249.25
n÷5
4182599.4
n2
437353443522009
n3
9.1463712523154E+21
n4
1.9127803456056E+29
n5
4.0001969629309E+36
2 √n
4573.0730368101
3 √n
275.51088282367
4 √n
67.624500270317
5 √n
29.112751612465
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20912996
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20912997 can be divided by 8 positive divisors.
The sum of these divisors (counting 20912997) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111110001101101100101
3
Ternary
1110100111020110
4
Quaternary
1033301231211
5
Quinary
20323203442
6
Senary
2024123233
8
Octal
117615545
10
Decimal
20912997
12
Duodecimal
7006519
16
Hexadecimal
13f1b65
20
Vigesimal
6ae29h
36
Base36
cg8kl
md5
201d077fb955d2e96575132d808eecda
sha1
61bbfea8eeacb22a64ab595ed7334c76287fb6a2
sha256
b4e5f8f6899f7371fadf64de58cafd1f32fc2819c5454887d4037ab44fca455b
sha512
e387d5658499620e1734fe863346c691c471b189b76d2ca19dfe19124897c3a0b61e050789cc0383d63e44e1eff0b6a12c9b687f9c7f3d0a5431550b8756d112
ripemd-160
b5d152917b7d40c9df60ed6d673a8244c342c5a7
Diameter
41825994
Circumference
131400235.47949
Area
1.3739863651909E+15
Volume
3.8312230311039E+22
Surface area
5.4959454607638E+15
Circumference
131400235.47949
Perimeter
83651988
Area
437353443522009
Diagonal
29575443.987268
Surface area
2624120661132054
Volume
9.1463712523154E+21
Space diagonal
36222373.342536
Perimeter
62738991
Area
1.8937959626133E+14
Altitude
18111186.671268
Surface area
1.8937959626133E+14
Volume
1.0779101892937E+21
Height
9858481.3290893