21242758 is an even 8-digits composite number following 21242757
and preceding 21242759 . In scientific notation, it is written as 2.1242758 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 9996576 positive integers (up to 21242758) that are relatively prime to 21242758.
21242758 has 8 divisors, whose sum is 33738552
The reverse of 21242758 is 85724212
Previous prime number is 17
Is Prime? no
Number parity even
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million two hundred forty-two thousand seven hundred fifty-eight
Scientific notation
2.1242758 × 10^7
Engineering notation
2.1242758 × 10^6
Prime Factorization
2 × 17 × 624787
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21242758
Product of the distinct prime numbers
The prime factorization of 21242758 is 2 × 17 × 624787.
Since it has a total of 3 prime factors.
9 , 6 , 62 , 88 , 465 , 273 , 1800 , 2681 , 30828 , 29249 , 746133 , 669596 , 1758688 , 7083254 , 76307085 , 24060276 , 633595144 , 60529351 , 3327875255 , 1702523716
n×2
42485516
n×3
63728274
n×4
84971032
n×5
106213790
n÷2
10621379
n÷3
7080919.3333333
n÷3
5310689.5
n÷5
4248551.6
n2
451254767446564
n3
9.5858958212136E+21
n4
2.0363086514325E+29
n5
4.3256811895687E+36
2 √n
4608.9866565222
3 √n
276.95144400369
4 √n
67.88951801657
5 √n
29.203989277929
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
-21242757
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 21242758 can be divided by 8 positive divisors.
The sum of these divisors (counting 21242758) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001000010001110000110
3
Ternary
1110222020120211
4
Quaternary
1101002032012
5
Quinary
20414232013
6
Senary
2035150034
8
Octal
121021606
10
Decimal
21242758
12
Duodecimal
714531a
16
Hexadecimal
1442386
20
Vigesimal
6cf6hi
36
Base36
cnb0m
md5
87d6d2f6859c6ad80b9966ef69918f5b
sha1
5852dd7964dea0cff10f087f6ec3e9267941f605
sha256
dd9800ff203a801dcf597139f2b2872dbdb4523ea5ffc1afa06b448f03340663
sha512
3efa1bed8ac0cd896b9b478cc3b5ac92cc46514c3fc5daf097f696867e57ebda8ca93e03fedba18f2a37a9ed00eb71d9be49402f0729de1b603af332d8d32122
ripemd-160
cfa82d9868769474a901e353003481629fae84ba
Diameter
42485516
Circumference
133472184.94957
Area
1.4176586623075E+15
Volume
4.0153306520002E+22
Surface area
5.67063464923E+15
Circumference
133472184.94957
Perimeter
84971032
Area
451254767446564
Diagonal
30041796.46581
Surface area
2707528604679384
Volume
9.5858958212136E+21
Space diagonal
36793536.14889
Perimeter
63728274
Area
1.9539904609378E+14
Altitude
18396768.074445
Surface area
1.9539904609378E+14
Volume
1.129708656488E+21
Height
10013932.15527