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 4 prime factors and 16 positive divisors.
There are 14099904 positive integers (up to 21297745) that are relatively prime to 21297745.
21297745 has 16 divisors, whose sum is 30216960
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
7 × 5 × 29 × 20983
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21297745
Product of the distinct prime numbers
The prime factorization of 21297745 is 7 × 5 × 29 × 20983.
Since it has a total of 4 prime factors.
6 , 6 , 59 , 82 , 151 , 365 , 8366 , 496 , 68234 , 10212 , 824696 , 664945 , 1711083 , 5759111 , 54381383 , 94498720 , 651202341 , 401880228 , 9909954965 , 3160533998
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
1 , 5 , 7 , 29 , 35 , 145 , 203 , 1015 , 20983 , 104915 , 146881 , 608507 , 734405 , 3042535 , 4259549 , 21297745
16 divisors
τ
Total Divisors
16
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
0.0625
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
16
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 16 positive divisors.
The sum of these divisors (counting 21297745) is 1, the average is 0.0625.
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