987988 is an even 6-digits composite number following 987987
and preceding 987989 . In scientific notation, it is written as 9.87988 × 10^5.
The sum of its digits is 49. It has a total of 4 prime factors and 12 positive divisors.
There are 472472 positive integers (up to 987988) that are relatively prime to 987988.
987988 has 12 divisors, whose sum is 1804320
The reverse of 987988 is 889789
Previous prime number is 23
Is Prime? no
Number parity even
Number length 6
Sum of Digits 49
Digital Root 4
Name
nine hundred eighty-seven thousand nine hundred eighty-eight
Scientific notation
9.87988 × 10^5
Engineering notation
9.87988 × 10^3
Prime Factorization
2 × 2 × 23 × 10739
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
493994
Product of the distinct prime numbers
The prime factorization of 987988 is 2 × 2 × 23 × 10739.
Since it has a total of 4 prime factors.
5 , 10 , 16 , 99 , 718 , 814 , 7407 , 2580 , 989 , 64079 , 849496 , 972885 , 2919774 , 10752 , 23421101 , 82124050 , 468117185 , 613780089 , 4116191859 , 2332086166
n×2
1975976
n×3
2963964
n×4
3951952
n×5
4939940
n÷2
493994
n÷3
329329.33333333
n÷3
246997
n÷5
197597.6
n2
976120288144
n3
964395131242814272
n4
9.5281081692633E+23
n5
9.4136565339341E+29
2 √n
993.97585483753
3 √n
99.597986013264
4 √n
31.527382619519
5 √n
15.810672175807
1 , 2 , 4 , 23 , 46 , 92 , 10739 , 21478 , 42956 , 246997 , 493994 , 987988
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-987987
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 987988 can be divided by 12 positive divisors.
The sum of these divisors (counting 987988) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
11110001001101010100
3
Ternary
1212012021011
4
Quaternary
3301031110
5
Quinary
223103423
6
Senary
33102004
8
Octal
3611524
10
Decimal
987988
12
Duodecimal
3b7904
16
Hexadecimal
f1354
20
Vigesimal
639j8
36
Base36
l6c4
md5
33c84b648b29e11f9aaf1705b662713a
sha1
977440b48b664b5c55bd3ca91efcc3e04810f6c1
sha256
a936d4874ca159730b388dc5de1e67e08c83e17a9f0a3061589fde24e2cd19f8
sha512
8ead6e03191046f82b831881c92139e346065186c7c066a5f94995332d14e3e8e598513f63c35fdad6b9e38ec5708ff89c5a86ffd856240273968dad6598b89f
ripemd-160
461e299ac18480d467768f438d3dca9c933f8d3d
Diameter
1975976
Circumference
6207711.6852697
Area
3066572326253.1
Volume
4.0396488792936E+18
Surface area
12266289305013
Circumference
6207711.6852697
Perimeter
3951952
Area
976120288144
Diagonal
1397226.0290619
Surface area
5856721728864
Volume
964395131242814272
Space diagonal
1711245.4132684
Perimeter
2963964
Area
422672483341.05
Altitude
855622.70663418
Surface area
422672483341.05
Volume
1.1365505617418E+17
Height
465742.00968729