21279907 is an odd 8-digits composite number following 21279906
and preceding 21279908 . In scientific notation, it is written as 2.1279907 × 10^7.
The sum of its digits is 37. It has a total of 4 prime factors and 12 positive divisors.
There are 19065200 positive integers (up to 21279907) that are relatively prime to 21279907.
21279907 has 12 divisors, whose sum is 23729328
The reverse of 21279907 is 70997212
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty-one million two hundred seventy-nine thousand nine hundred seven
Scientific notation
2.1279907 × 10^7
Engineering notation
2.1279907 × 10^6
Prime Factorization
71 × 11 × 11 × 2477
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1934537
Product of the distinct prime numbers
The prime factorization of 21279907 is 71 × 11 × 11 × 2477.
Since it has a total of 4 prime factors.
8 , 9 , 5 , 96 , 211 , 937 , 1028 , 8242 , 63339 , 7922 , 343983 , 131677 , 3433304 , 9537544 , 19936385 , 37082801 , 485335031 , 56108985 , 3848107175 , 9776903398
n×2
42559814
n×3
63839721
n×4
85119628
n×5
106399535
n÷2
10639953.5
n÷3
7093302.3333333
n÷3
5319976.75
n÷5
4255981.4
n2
452834441928649
n3
9.6362748106386E+21
n4
2.0505903179683E+29
n5
4.3636371261466E+36
2 √n
4613.0149577039
3 √n
277.11279275724
4 √n
67.919179601228
5 √n
29.214196435505
1 , 11 , 71 , 121 , 781 , 2477 , 8591 , 27247 , 175867 , 299717 , 1934537 , 21279907
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21279906
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21279907 can be divided by 12 positive divisors.
The sum of these divisors (counting 21279907) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010001001011010010100011
3
Ternary
1111001010112201
4
Quaternary
1101023102203
5
Quinary
20421424112
6
Senary
2040034031
8
Octal
121132243
10
Decimal
21279907
12
Duodecimal
7162917
16
Hexadecimal
144b4a3
20
Vigesimal
6cjjf7
36
Base36
co3oj
md5
048e3d6b96ce39321f10493041ecca91
sha1
4667f836fc5d1128195c28d459116ac5ce2417a8
sha256
ea132ef1a4549711c3fea26e5ceffd26b1610a688b07f2c2f04359ab2f189ecb
sha512
07cd0f019ac4f59acb0f3fa992cbe75b171c5080ca23b1fd341fb7de21b699112291843a5a871b403825b6d75373af33f28ae1caa7959f430d2f88ec3d280990
ripemd-160
d8b69f53cd5a3479d1f3ed8910b915dbfb2f0cb1
Diameter
42559814
Circumference
133705599.00055
Area
1.4226213560555E+15
Volume
4.0364333537433E+22
Surface area
5.6904854242219E+15
Circumference
133705599.00055
Perimeter
85119628
Area
452834441928649
Diagonal
30094333.085438
Surface area
2717006651571894
Volume
9.6362748106386E+21
Space diagonal
36857880.104341
Perimeter
63839721
Area
1.9608306520938E+14
Altitude
18428940.05217
Surface area
1.9608306520938E+14
Volume
1.1356458773299E+21
Height
10031444.361813