21291272 is an even 8-digits composite number following 21291271
and preceding 21291273 . In scientific notation, it is written as 2.1291272 × 10^7.
The sum of its digits is 26. It has a total of 4 prime factors and 8 positive divisors.
There are 10645632 positive integers (up to 21291272) that are relatively prime to 21291272.
21291272 has 8 divisors, whose sum is 39921150
The reverse of 21291272 is 27219212
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty-one million two hundred ninety-one thousand two hundred seventy-two
Scientific notation
2.1291272 × 10^7
Engineering notation
2.1291272 × 10^6
Prime Factorization
2 × 2 × 2 × 2661409
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
5322818
Product of the distinct prime numbers
The prime factorization of 21291272 is 2 × 2 × 2 × 2661409.
Since it has a total of 4 prime factors.
8 , 1 , 41 , 36 , 854 , 739 , 3039 , 1059 , 89837 , 7371 , 233285 , 922002 , 3952017 , 4736559 , 53194342 , 88439378 , 535062767 , 167437232 , 6000009543 , 6307439662
n×2
42582544
n×3
63873816
n×4
85165088
n×5
106456360
n÷2
10645636
n÷3
7097090.6666667
n÷3
5322818
n÷5
4258254.4
n2
453318263377984
n3
9.6517224481483E+21
n4
2.0549744791203E+29
n5
4.3753020588009E+36
2 √n
4614.2466340671
3 √n
277.16211669445
4 √n
67.92824621663
5 √n
29.21731626527
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
-21291271
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 21291272 can be divided by 8 positive divisors.
The sum of these divisors (counting 21291272) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001001110000100001000
3
Ternary
1111001201010122
4
Quaternary
1101032010020
5
Quinary
20422310042
6
Senary
2040202412
8
Octal
121160410
10
Decimal
21291272
12
Duodecimal
7169408
16
Hexadecimal
144e108
20
Vigesimal
6d183c
36
Base36
cocg8
md5
d197f6e7257126f01602b587dff7e11e
sha1
42ff4b6bfaa99dce88af21b6f4429320a43fbf5a
sha256
2dba481cbf305076d779a57ea0cbbb2a57f20b22ddf36e35ba06e91a96a26963
sha512
3b82fae234103de1f862d68651353a519dc6ca6a07ca21e7f59ee20ffd1bc29a033968bb945601b93c6574bb388432324b1c9e9ddd8b8ee1f82add464a86387a
ripemd-160
e062de203976791f19e40d342418d6dde5fa20d7
Diameter
42582544
Circumference
133777007.40156
Area
1.4241413259664E+15
Volume
4.0429040450121E+22
Surface area
5.6965653038654E+15
Circumference
133777007.40156
Perimeter
85165088
Area
453318263377984
Diagonal
30110405.622575
Surface area
2719909580267904
Volume
9.6517224481483E+21
Space diagonal
36877564.861769
Perimeter
63873816
Area
1.9629256604239E+14
Altitude
18438782.430884
Surface area
1.9629256604239E+14
Volume
1.1374663988693E+21
Height
10036801.874192