987988 (number)

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.

Interesting facts

Basic properties

Name

Name nine hundred eighty-seven thousand nine hundred eighty-eight

Notation

Scientific notation 9.87988 × 10^5
Engineering notation 9.87988 × 10^3

Prime Factorization of 987988

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.

Most popular turbo-numbers

Basic calculations (n = 987988)

Multiplication

n×y
n×2 1975976
n×3 2963964
n×4 3951952
n×5 4939940

Division

n÷y
n÷2 493994
n÷3 329329.33333333
n÷3 246997
n÷5 197597.6

Exponentiation

ny
n2 976120288144
n3 964395131242814272
n4 9.5281081692633E+23
n5 9.4136565339341E+29

Nth Root

y√n
2√n 993.97585483753
3√n 99.597986013264
4√n 31.527382619519
5√n 15.810672175807

Divisors of 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 conversion 987988

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

Cryptographic Hash Functions

md5 33c84b648b29e11f9aaf1705b662713a
sha1 977440b48b664b5c55bd3ca91efcc3e04810f6c1
sha256 a936d4874ca159730b388dc5de1e67e08c83e17a9f0a3061589fde24e2cd19f8
sha512 8ead6e03191046f82b831881c92139e346065186c7c066a5f94995332d14e3e8e598513f63c35fdad6b9e38ec5708ff89c5a86ffd856240273968dad6598b89f
ripemd-160 461e299ac18480d467768f438d3dca9c933f8d3d

987988 as geometric shapes

Circle

Radius = n
Diameter 1975976
Circumference 6207711.6852697
Area 3066572326253.1

Sphere

Radius = n
Volume 4.0396488792936E+18
Surface area 12266289305013
Circumference 6207711.6852697

Square

Length = n
Perimeter 3951952
Area 976120288144
Diagonal 1397226.0290619

Cube

Length = n
Surface area 5856721728864
Volume 964395131242814272
Space diagonal 1711245.4132684

Equilateral Triangle

Length = n
Perimeter 2963964
Area 422672483341.05
Altitude 855622.70663418

Triangular Pyramid

Length = n
Surface area 422672483341.05
Volume 1.1365505617418E+17
Height 465742.00968729