21253385 is an odd 8-digits composite number following 21253384
and preceding 21253386 . In scientific notation, it is written as 2.1253385 × 10^7.
The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors.
There are 16982784 positive integers (up to 21253385) that are relatively prime to 21253385.
21253385 has 8 divisors, whose sum is 25533960
The reverse of 21253385 is 58335212
Previous prime number is 1093
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million two hundred fifty-three thousand three hundred eighty-five
Scientific notation
2.1253385 × 10^7
Engineering notation
2.1253385 × 10^6
Prime Factorization
5 × 1093 × 3889
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21253385
Product of the distinct prime numbers
The prime factorization of 21253385 is 5 × 1093 × 3889.
Since it has a total of 3 prime factors.
8 , 9 , 24 , 27 , 247 , 993 , 5527 , 6663 , 11701 , 39943 , 905046 , 424393 , 8731275 , 9731467 , 96722920 , 97406038 , 491651378 , 527193460 , 1524505077 , 8664081850
n×2
42506770
n×3
63760155
n×4
85013540
n×5
106266925
n÷2
10626692.5
n÷3
7084461.6666667
n÷3
5313346.25
n÷5
4250677
n2
451706373958225
n3
9.6002894726881E+21
n4
2.0403864827449E+29
n5
4.3365119466573E+36
2 √n
4610.1393688261
3 √n
276.99761930643
4 √n
67.898007104966
5 √n
29.206910637854
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
-21253384
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 21253385 can be divided by 8 positive divisors.
The sum of these divisors (counting 21253385) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001000100110100001001
3
Ternary
1110222210011102
4
Quaternary
1101010310021
5
Quinary
20420102020
6
Senary
2035311145
8
Octal
121046411
10
Decimal
21253385
12
Duodecimal
714b4b5
16
Hexadecimal
1444d09
20
Vigesimal
6cgd95
36
Base36
cnj7t
md5
722c2de89d47c420f70bf80a458e11b3
sha1
efdf9a0a5de4a31dec992257462457cad6836f43
sha256
93391a2a952b8d4c1bd10888539eaa2a64e1f634920fc5268a766131ae1581cf
sha512
dd0fb0902db78b6d8474878c8683b80037909af7df16641415e9eef2dcef8dce3eafda9f383209833ca48f499210141a41eff703bf355ca5ecff00c7188171d4
ripemd-160
20330a0eec6b0b01ccba8aaca1a9ff61bb62865e
Diameter
42506770
Circumference
133538956.35983
Area
1.4190774260068E+15
Volume
4.021359850631E+22
Surface area
5.6763097040274E+15
Circumference
133538956.35983
Perimeter
85013540
Area
451706373958225
Diagonal
30056825.313337
Surface area
2710238243749350
Volume
9.6002894726881E+21
Space diagonal
36811942.652822
Perimeter
63760155
Area
1.9559459744959E+14
Altitude
18405971.326411
Surface area
1.9559459744959E+14
Volume
1.1314049645819E+21
Height
10018941.771112