128646978 is an even 9-digits composite number following 128646977
and preceding 128646979 . In scientific notation, it is written as 1.28646978 × 10^8.
The sum of its digits is 51. It has a total of 4 prime factors and 16 positive divisors.
There are 42554720 positive integers (up to 128646978) that are relatively prime to 128646978.
128646978 has 16 divisors, whose sum is 259259616
The reverse of 128646978 is 879646821
Previous prime number is 131
Is Prime? no Number parity even Number length 9 Sum of Digits 51 Digital Root 6
Name
one hundred twenty-eight million six hundred forty-six thousand nine hundred seventy-eight
Scientific notation
1.28646978 × 10^8
Engineering notation
1.28646978 × 10^6
Prime Factorization
2 × 3 × 131 × 163673
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
128646978 Product of the distinct prime numbers
The prime factorization of 128646978 is 2 × 3 × 131 × 163673.
Since it has a total of 4 prime factors.
1 , 1 , 6 , 70 , 229 , 170 , 1409 , 9915 , 75596 , 91141 , 394403 , 32340 , 4203363 , 9472566 , 10438791 , 22511709 , 209301053 , 281917353 , 9147629816 , 985669853
n×2
257293956
n×3
385940934
n×4
514587912
n×5
643234890
n÷2
64323489
n÷3
42882326
n÷3
32161744.5
n÷5
25729395.6
n2
16550044948532484
n3
2.1291132683929E+24
n4
2.7390398779845E+32
n5
3.5236920292419E+40
2 √n11342.265117691
3 √n504.81609877389
4 √n106.50007097505
5 √n41.867778488416
1 , 2 , 3 , 6 , 131 , 262 , 393 , 786 , 163673 , 327346 , 491019 , 982038 , 21441163 , 42882326 , 64323489 , 128646978
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
-128646977 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 128646978 can be divided by 16 positive divisors.
The sum of these divisors (counting 128646978) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111101010101111111101000010
3
Ternary
22222001221110220
4
Quaternary
13222233331002
5
Quinary
230413200403
6
Senary
20433203510
8
Octal
752577502
10
Decimal
128646978
12
Duodecimal
37100596
16
Hexadecimal
7aaff42
20
Vigesimal
2040h8i
36
Base36
24lcn6
md5
02896d4e4de40bb5f2eee1532d9e001a
sha1
9e7286770a134413181a57cb7ae3a2d351ae7546
sha256
5a9354b73f65576687c0d49bf5b096dd3bc442f42bf3ccdaab486616384c5fa3
sha512
32159504c30e9d0b3ecb77e2e4121ee51b3625aaab55e610cf5271274cf073feed6cd2f28b48f553e049f2b47bd9a2d4fe89620e3164121ebccb9f85821ea319
ripemd-160
ef76dd89021e50e917218a0617d322d03914d968
Diameter
257293956
Circumference
808312801.98266
Area
5.1993499626891E+16
Volume
8.9184088035248E+24
Surface area
2.0797399850756E+17
Circumference
808312801.98266
Perimeter
514587912
Area
16550044948532484
Diagonal
181934301.04591
Surface area
99300269691194904
Volume
2.1291132683929E+24
Space diagonal
222823102.1362
Perimeter
385940934
Area
7.1663796796017E+15
Altitude
111411551.0681
Surface area
7.1663796796017E+15
Volume
2.5091840499914E+23
Height
60644767.015304