20991307 is an odd 8-digits composite number following 20991306
and preceding 20991308 . In scientific notation, it is written as 2.0991307 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 20973376 positive integers (up to 20991307) that are relatively prime to 20991307.
20991307 has 4 divisors, whose sum is 21009240
The reverse of 20991307 is 70319902
Previous prime number is 1259
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty million nine hundred ninety-one thousand three hundred seven
Scientific notation
2.0991307 × 10^7
Engineering notation
2.0991307 × 10^6
Prime Factorization
1259 × 16673
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20991307
Product of the distinct prime numbers
The prime factorization of 20991307 is 1259 × 16673.
Since it has a total of 2 prime factors.
7 , 8 , 28 , 93 , 578 , 874 , 7028 , 9817 , 48388 , 43209 , 531729 , 89876 , 2484896 , 2737385 , 39513071 , 13932913 , 75589028 , 904565085 , 1327489306 , 3244997423
n×2
41982614
n×3
62973921
n×4
83965228
n×5
104956535
n÷2
10495653.5
n÷3
6997102.3333333
n÷3
5247826.75
n÷5
4198261.4
n2
440634969568249
n3
9.2495039211428E+21
n4
1.9415917640641E+29
n5
4.0756548788141E+36
2 √n
4581.6271127188
3 √n
275.85434360963
4 √n
67.687717591294
5 √n
29.134521925549
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
-20991306
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 20991307 can be divided by 4 positive divisors.
The sum of these divisors (counting 20991307) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000100110101001011
3
Ternary
1110111110122211
4
Quaternary
1100010311023
5
Quinary
20333210212
6
Senary
2025525551
8
Octal
120046513
10
Decimal
20991307
12
Duodecimal
70438b7
16
Hexadecimal
1404d4b
20
Vigesimal
6b3i57
36
Base36
chwzv
md5
1133585850e04c011b264e95909d60fd
sha1
95755caf2301f529f4bfee3aca8c741967be376a
sha256
a6452b74900b9ccee5675a35e5ad54a473e4f82a338dcf742e15648bf9d5dc64
sha512
048c85b0710dd3af4b027c9a5f9b9305676c313dfd824fcf3c0fd6363ef48a670cf6a49b9abe2be36b23ce36cbc6ef7914d92f015af57ae4f98421aa97046507
ripemd-160
f3f8bdca5d1926e0716acfe7386b3f8febdc04f0
Diameter
41982614
Circumference
131892271.7209
Area
1.3842955833104E+15
Volume
3.8744231424016E+22
Surface area
5.5371823332415E+15
Circumference
131892271.7209
Perimeter
83965228
Area
440634969568249
Diagonal
29686191.051337
Surface area
2643809817409494
Volume
9.2495039211428E+21
Space diagonal
36358010.241276
Perimeter
62973921
Area
1.9080053872094E+14
Altitude
18179005.120638
Surface area
1.9080053872094E+14
Volume
1.0900644908753E+21
Height
9895397.0171124