128691894 is an even 9-digits composite number following 128691893
and preceding 128691895 . In scientific notation, it is written as 1.28691894 × 10^8.
The sum of its digits is 48. It has a total of 4 prime factors and 16 positive divisors.
There are 42559272 positive integers (up to 128691894) that are relatively prime to 128691894.
128691894 has 16 divisors, whose sum is 259411968
The reverse of 128691894 is 498196821
Previous prime number is 127
Is Prime? no
Number parity even
Number length 9
Sum of Digits 48
Digital Root 3
Name
one hundred twenty-eight million six hundred ninety-one thousand eight hundred ninety-four
Scientific notation
1.28691894 × 10^8
Engineering notation
1.28691894 × 10^6
Prime Factorization
2 × 3 × 127 × 168887
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
128691894
Product of the distinct prime numbers
The prime factorization of 128691894 is 2 × 3 × 127 × 168887.
Since it has a total of 4 prime factors.
4 , 10 , 77 , 40 , 337 , 155 , 7028 , 928 , 44276 , 20039 , 887242 , 227085 , 9981453 , 4466750 , 76920172 , 25400625 , 367212447 , 370455372 , 3336543214 , 3154254179
n×2
257383788
n×3
386075682
n×4
514767576
n×5
643459470
n÷2
64345947
n÷3
42897298
n÷3
32172973.5
n÷5
25738378.8
n2
16561603581307236
n3
2.1313441325556E+24
n4
2.7428671318437E+32
n5
3.5298476618731E+40
2 √n
11344.244972672
3 √n
504.87484268923
4 √n
106.50936565707
5 √n
41.870701636078
1 , 2 , 3 , 6 , 127 , 254 , 381 , 762 , 168887 , 337774 , 506661 , 1013322 , 21448649 , 42897298 , 64345947 , 128691894
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
-128691893
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 128691894 can be divided by 16 positive divisors.
The sum of these divisors (counting 128691894) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111101010111010111010110110
3
Ternary
22222011020002110
4
Quaternary
13222322322312
5
Quinary
230421120034
6
Senary
20434151450
8
Octal
752727266
10
Decimal
128691894
12
Duodecimal
37122586
16
Hexadecimal
7abaeb6
20
Vigesimal
20469ee
36
Base36
24mbau
md5
7990aedef882cd64f38716b9948c2728
sha1
9381b9ba591ad352311e135b93e9b62021a972b8
sha256
90d34bb2fa8410be4322f735fed16f96abb7d60ef1016b16a0133b6052ab3486
sha512
1bc6c78f1b9ca3436f6cb04c8f6fc6390d36eef1ecd6b693625ff8d1832d03c889d42a02e8e6f0e1a0ef771a495b5db5d191e1e2a2c7c12f08bb35c49dd1ea31
ripemd-160
8d7ac9fee39b8a0ec96cb41aadbea8aa46587496
Diameter
257383788
Circumference
808595017.53391
Area
5.2029812142701E+16
Volume
8.9277534254779E+24
Surface area
2.081192485708E+17
Circumference
808595017.53391
Perimeter
514767576
Area
16561603581307236
Diagonal
181997821.86228
Surface area
99369621487843416
Volume
2.1313441325556E+24
Space diagonal
222900898.93027
Perimeter
386075682
Area
7.1713847144097E+15
Altitude
111450449.46513
Surface area
7.1713847144097E+15
Volume
2.5118131486204E+23
Height
60665940.62076