21297745 is an odd 8-digits composite number following 21297744
and preceding 21297746 . In scientific notation, it is written as 2.1297745 × 10^7.
The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors.
There are 14099904 positive integers (up to 21297745) that are relatively prime to 21297745.
21297745 has 8 divisors, whose sum is 22662720
The reverse of 21297745 is 54779212
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty-one million two hundred ninety-seven thousand seven hundred forty-five
Scientific notation
2.1297745 × 10^7
Engineering notation
2.1297745 × 10^6
Prime Factorization
35 × 29 × 20983
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21297745
Product of the distinct prime numbers
The prime factorization of 21297745 is 35 × 29 × 20983.
Since it has a total of 3 prime factors.
1 , 9 , 79 , 92 , 17 , 755 , 1098 , 9244 , 83065 , 94400 , 977316 , 469516 , 4367094 , 7395202 , 78400856 , 84574979 , 205557903 , 228345299 , 9542179965 , 3867858432
n×2
42595490
n×3
63893235
n×4
85190980
n×5
106488725
n÷2
10648872.5
n÷3
7099248.3333333
n÷3
5324436.25
n÷5
4259549
n2
453593942085025
n3
9.6605281120716E+21
n4
2.0574746429623E+29
n5
4.3819570289778E+36
2 √n
4614.9479953733
3 √n
277.19020157668
4 √n
67.933408536399
5 √n
29.21909258651
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
-21297744
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 21297745 can be divided by 8 positive divisors.
The sum of these divisors (counting 21297745) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001001111101001010001
3
Ternary
1111002001000101
4
Quaternary
1101033221101
5
Quinary
20423011440
6
Senary
2040252401
8
Octal
121175121
10
Decimal
21297745
12
Duodecimal
7171101
16
Hexadecimal
144fa51
20
Vigesimal
6d2475
36
Base36
cohg1
md5
f20404450ab67797b79e44bffc407bcd
sha1
9d016d2a2ce145cd75cfc9c0d7d310efa34a95e6
sha256
5f754ea5b20e54ad20d51b085d9602eeb11842f51b623964cc774b99acfa8c7b
sha512
b694f71b6a9d60ec702e2264a7f8038053118b99bef0fb73d26ac32909fe132971eaba26a6bcb869d1517fc9d04663f4fcb34eb0effb6316d09e7f63ea285789
ripemd-160
8fb0459fd9d0eb73611035144bc3c7d2d15585d0
Diameter
42595490
Circumference
133817678.46006
Area
1.4250073961671E+15
Volume
4.0465925528909E+22
Surface area
5.7000295846686E+15
Circumference
133817678.46006
Perimeter
85190980
Area
453593942085025
Diagonal
30119559.826964
Surface area
2721563652510150
Volume
9.6605281120716E+21
Space diagonal
36888776.426646
Perimeter
63893235
Area
1.9641193842418E+14
Altitude
18444388.213323
Surface area
1.9641193842418E+14
Volume
1.1385041563149E+21
Height
10039853.275655