127988 is an even 6-digits composite number following 127987
and preceding 127989 . In scientific notation, it is written as 1.27988 × 10^5.
The sum of its digits is 35. It has a total of 5 prime factors and 18 positive divisors.
There are 54768 positive integers (up to 127988) that are relatively prime to 127988.
127988 has 18 divisors, whose sum is 260946
The reverse of 127988 is 889721
Previous prime number is 7
Is Prime? no
Number parity even
Number length 6
Sum of Digits 35
Digital Root 8
Name
one hundred twenty-seven thousand nine hundred eighty-eight
Scientific notation
1.27988 × 10^5
Engineering notation
1.27988 × 10^3
Prime Factorization
2 × 2 × 7 × 7 × 653
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
9142
Product of the distinct prime numbers
The prime factorization of 127988 is 2 × 2 × 7 × 7 × 653.
Since it has a total of 5 prime factors.
4 , 4 , 16 , 39 , 687 , 626 , 4878 , 4419 , 39625 , 42486 , 224934 , 771879 , 5691386 , 3857791 , 32080113 , 28584295 , 608996195 , 698137006 , 1366776670 , 1695101776
n×2
255976
n×3
383964
n×4
511952
n×5
639940
n÷2
63994
n÷3
42662.666666667
n÷3
31997
n÷5
25597.6
n2
16380928144
n3
2096562231294272
n4
2.6833480685889E+20
n5
3.4343635260256E+25
2 √n
357.75410549706
3 √n
50.395267045264
4 √n
18.914388848098
5 √n
10.505914220642
1 , 2 , 4 , 7 , 14 , 28 , 49 , 98 , 196 , 653 , 1306 , 2612 , 4571 , 9142 , 18284 , 31997 , 63994 , 127988
18 divisors
τ
Total Divisors
18
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-127987
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.055555555555556
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
18
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 127988 can be divided by 18 positive divisors.
The sum of these divisors (counting 127988) is 1, the average is 0.055555555555556.
Base
System
Value
2
Binary
11111001111110100
3
Ternary
20111120022
4
Quaternary
133033310
5
Quinary
13043423
6
Senary
2424312
8
Octal
371764
10
Decimal
127988
12
Duodecimal
62098
16
Hexadecimal
1f3f4
20
Vigesimal
fjj8
36
Base36
2qr8
md5
ca8888fca7e0bec908e58b925998ac9b
sha1
bd468011b85454631dffcd444daf645e30be2258
sha256
fb4a6dd7da868f66086bb1ed67a697740fc58eac2a68a056614f83c150bd0606
sha512
36589d8ff3b47633491c4f17dc8d6be233803803d244d3bcd4a477689a2508862e23ad44726448757775ddefc2fe325444c70d057c6c8851a8f43986418afb8d
ripemd-160
3c216406fc9f46640422c1289a7138f2c43f4837
Diameter
255976
Circumference
804172.3210953
Area
51462203516.173
Volume
8.7820593381705E+15
Surface area
205848814064.69
Circumference
804172.3210953
Perimeter
511952
Area
16380928144
Diagonal
181002.36542101
Surface area
98285568864
Volume
2096562231294272
Space diagonal
221681.71875913
Perimeter
383964
Area
7093149955.1357
Altitude
110840.85937956
Surface area
7093149955.1357
Volume
2.4708222848796E+14
Height
60334.121807003