21388345 is an odd 8-digits composite number following 21388344
and preceding 21388346 . In scientific notation, it is written as 2.1388345 × 10^7.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 15555120 positive integers (up to 21388345) that are relatively prime to 21388345.
21388345 has 8 divisors, whose sum is 27999360
The reverse of 21388345 is 54388312
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million three hundred eighty-eight thousand three hundred forty-five
Scientific notation
2.1388345 × 10^7
Engineering notation
2.1388345 × 10^6
Prime Factorization
11 × 5 × 388879
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21388345
Product of the distinct prime numbers
The prime factorization of 21388345 is 11 × 5 × 388879.
Since it has a total of 3 prime factors.
5 , 5 , 84 , 87 , 380 , 336 , 2521 , 5953 , 45432 , 83932 , 200386 , 344589 , 271487 , 2345574 , 97074592 , 46793237 , 124650830 , 568400462 , 7818711943 , 1237967863
n×2
42776690
n×3
64165035
n×4
85553380
n×5
106941725
n÷2
10694172.5
n÷3
7129448.3333333
n÷3
5347086.25
n÷5
4277669
n2
457461301839025
n3
9.7843401478822E+21
n4
2.0927084268026E+29
n5
4.475956981686E+36
2 √n
4624.753506945
3 √n
277.58269861609
4 √n
68.005540266547
5 √n
29.243909830978
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
-21388344
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 21388345 can be divided by 8 positive divisors.
The sum of these divisors (counting 21388345) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001100101110000111001
3
Ternary
1111020122021221
4
Quaternary
1101211300321
5
Quinary
20433411340
6
Senary
2042232041
8
Octal
121456071
10
Decimal
21388345
12
Duodecimal
71b5621
16
Hexadecimal
1465c39
20
Vigesimal
6ddah5
36
Base36
cqfcp
md5
3728af7592fc433d237d4101e606f150
sha1
e7e721b3203c4f41a90b65cb4578db2f8ca4d516
sha256
3769c9ba9a178c5fe4891d089f42f6e638d5c7901e708794d4fae65cc0fa8ce5
sha512
92f229cf8644d03b9bb95c6a0297e8a2442e7a2c6b0fcfadac8e32058ae0d45f2708007ead22600a9a16bbc0c7af3aa967b993367699d856ed36e680d194a7ff
ripemd-160
9136afd284f22be72c869d602d8b3be19458a37b
Diameter
42776690
Circumference
134386935.04889
Area
1.4371570651591E+15
Volume
4.0984548171747E+22
Surface area
5.7486282606364E+15
Circumference
134386935.04889
Perimeter
85553380
Area
457461301839025
Diagonal
30247687.575715
Surface area
2744767811034150
Volume
9.7843401478822E+21
Space diagonal
37045700.229812
Perimeter
64165035
Area
1.9808655432045E+14
Altitude
18522850.114906
Surface area
1.9808655432045E+14
Volume
1.1530955446672E+21
Height
10082562.525238