21276721 is an odd 8-digits composite number following 21276720
and preceding 21276722 . In scientific notation, it is written as 2.1276721 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 20959092 positive integers (up to 21276721) that are relatively prime to 21276721.
21276721 has 4 divisors, whose sum is 21594352
The reverse of 21276721 is 12767212
Previous prime number is 67
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million two hundred seventy-six thousand seven hundred twenty-one
Scientific notation
2.1276721 × 10^7
Engineering notation
2.1276721 × 10^6
Prime Factorization
67 × 317563
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21276721
Product of the distinct prime numbers
The prime factorization of 21276721 is 67 × 317563.
Since it has a total of 2 prime factors.
1 , 10 , 58 , 3 , 857 , 623 , 9780 , 3257 , 30993 , 89673 , 521782 , 18227 , 2189194 , 786511 , 37665296 , 62989513 , 45845768 , 41786578 , 8940410966 , 5153354419
n×2
42553442
n×3
63830163
n×4
85106884
n×5
106383605
n÷2
10638360.5
n÷3
7092240.3333333
n÷3
5319180.25
n÷5
4255344.2
n2
452698856511841
n3
9.6319472670215E+21
n4
2.0493625468713E+29
n5
4.360371513763E+36
2 √n
4612.6696174775
3 √n
277.09896241136
4 √n
67.916637265677
5 √n
29.213321600813
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
-21276720
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 21276721 can be divided by 4 positive divisors.
The sum of these divisors (counting 21276721) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001001010100000110001
3
Ternary
1111000222011201
4
Quaternary
1101022200301
5
Quinary
20421323341
6
Senary
2040011201
8
Octal
121124061
10
Decimal
21276721
12
Duodecimal
7160b01
16
Hexadecimal
144a831
20
Vigesimal
6cjbg1
36
Base36
co181
md5
462c428b12306de6faaf9b3c4899c23e
sha1
7135c6ea3fbd2d3e52309c4b112d0eda61f50e72
sha256
9ebf0e03d4f29258c641a09f7eef7d072d739f56ab864d8d19d193ac96d1caeb
sha512
b9386aca573c0015a8c82f38f8c341b0521275a17443194275ce517bac466c9fe41b002ea1bc09f28e405e0a4103db1c29833e5e8c894e1324bc96f89676ad00
ripemd-160
73e1a5d93ca41f234ee2ee39018685ded569fca2
Diameter
42553442
Circumference
133685580.77216
Area
1.4221954019061E+15
Volume
4.0346206365119E+22
Surface area
5.6887816076244E+15
Circumference
133685580.77216
Perimeter
85106884
Area
452698856511841
Diagonal
30089827.401028
Surface area
2716193139071046
Volume
9.6319472670215E+21
Space diagonal
36852361.790468
Perimeter
63830163
Area
1.9602435500171E+14
Altitude
18426180.895234
Surface area
1.9602435500171E+14
Volume
1.1351358714237E+21
Height
10029942.467009