128420715 is an odd 9-digits composite number following 128420714
and preceding 128420716 . In scientific notation, it is written as 1.28420715 × 10^8.
The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors.
There are 64886112 positive integers (up to 128420715) that are relatively prime to 128420715.
128420715 has 16 divisors, whose sum is 216288000
The reverse of 128420715 is 517024821
Previous prime number is 19
Is Prime? no Number parity odd Number length 9 Sum of Digits 30 Digital Root 3
Name
one hundred twenty-eight million four hundred twenty thousand seven hundred fifteen
Scientific notation
1.28420715 × 10^8
Engineering notation
1.28420715 × 10^6
Prime Factorization
3 × 5 × 19 × 450599
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
128420715 Product of the distinct prime numbers
The prime factorization of 128420715 is 3 × 5 × 19 × 450599.
Since it has a total of 4 prime factors.
7 , 10 , 89 , 50 , 530 , 595 , 8663 , 1686 , 56310 , 40569 , 325901 , 286800 , 9280504 , 7040511 , 61501677 , 88546185 , 641768190 , 31158130 , 6514481565 , 4508649591
n×2
256841430
n×3
385262145
n×4
513682860
n×5
642103575
n÷2
64210357.5
n÷3
42806905
n÷3
32105178.75
n÷5
25684143
n2
16491880041111225
n3
2.1178990265737E+24
n4
2.719821072904E+32
n5
3.492813668544E+40
2 √n11332.286397722
3 √n504.51996995185
4 √n106.45321224708
5 √n41.853040791735
1 , 3 , 5 , 15 , 19 , 57 , 95 , 285 , 450599 , 1351797 , 2252995 , 6758985 , 8561381 , 25684143 , 42806905 , 128420715
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
-128420714 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 128420715 can be divided by 16 positive divisors.
The sum of these divisors (counting 128420715) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111101001111000101101101011
3
Ternary
22221122110002210
4
Quaternary
13221320231223
5
Quinary
230333430330
6
Senary
20424300203
8
Octal
751705553
10
Decimal
128420715
12
Duodecimal
37011663
16
Hexadecimal
7a78b6b
20
Vigesimal
202cbff
36
Base36
24gi23
md5
cead532c57942e15d1a8e164ae3735d9
sha1
7faa8dfd244619f7a7f425968794f9c7b252d1aa
sha256
285a27a1d680f2175d88ede40f78ce28638b389132b03b70ce8ccb0d6862fcac
sha512
5e2ab6e62390060a09216bd6f6382e757b8d833d46bdb6714460a945137b08b903c86337f8f6b7c3de604fca74e5af0f9a51b8d7fd1e9b0fb98890e3c3631a54
ripemd-160
2697142eadfb7a24f88d9ef103026c2fdb7b5759
Diameter
256841430
Circumference
806891149.6255
Area
5.1810769181039E+16
Volume
8.8714346972387E+24
Surface area
2.0724307672416E+17
Circumference
806891149.6255
Perimeter
513682860
Area
16491880041111225
Diagonal
181614316.84265
Surface area
98951280246667350
Volume
2.1178990265737E+24
Space diagonal
222431203.12432
Perimeter
385262145
Area
7.1411935358839E+15
Altitude
111215601.56216
Surface area
7.1411935358839E+15
Volume
2.4959679392645E+23
Height
60538105.614217