987990987 (number)

987990987 is an odd 9-digits composite number following 987990986 and preceding 987990988. In scientific notation, it is written as 9.87990987 × 10^8. The sum of its digits is 66. It has a total of 3 prime factors and 8 positive divisors. There are 637413480 positive integers (up to 987990987) that are relatively prime to 987990987.

Interesting facts

Basic properties

Name

Name nine hundred eighty-seven million nine hundred ninety thousand nine hundred eighty-seven

Notation

Scientific notation 9.87990987 × 10^8
Engineering notation 9.87990987 × 10^6

Prime Factorization of 987990987

Prime Factorization 3 × 31 × 10623559

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 987990987
Product of the distinct prime numbers

The prime factorization of 987990987 is 3 × 31 × 10623559. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 6, 94, 54, 821, 674, 6339, 5997, 63819, 3921, 404432, 142520, 4426489, 8512400, 49642000, 18372404, 160429208, 867375867, 1167773865, 7243815948

Basic calculations (n = 987990987)

Multiplication

n×y
n×2 1975981974
n×3 2963972961
n×4 3951963948
n×5 4939954935

Division

n÷y
n÷2 493995493.5
n÷3 329330329
n÷3 246997746.75
n÷5 197598197.4

Exponentiation

ny
n2 976126190393234169
n3 9.6440387828316E+26
n4 9.5282233957161E+35
n5 9.41379883709E+44

Nth Root

y√n
2√n 31432.323919812
3√n 995.98086385227
4√n 177.29163522234
5√n 62.94345770412

Divisors of 987990987

1, 3, 31, 93, 10623559, 31870677, 329330329, 987990987

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -987990986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 987990987 can be divided by 8 positive divisors. The sum of these divisors (counting 987990987) is 1, the average is 0.125.

Base conversion 987990987

Base System Value
2 Binary 111010111000111000101111001011
3 Ternary 2112212002010211210
4 Quaternary 322320320233023
5 Quinary 4010411202422
6 Senary 242012024203
8 Octal 7270705713
10 Decimal 987990987
12 Duodecimal 236a62063
16 Hexadecimal 3ae38bcb
20 Vigesimal f8eih97
36 Base36 gc82q3

Cryptographic Hash Functions

md5 4e5cbbe8bb0a13d57f74e24616f9b45e
sha1 dc3e3bb02a97fe7b90b6e613558ea32769933f16
sha256 c8fefaf0de8c59b495ea256e50bff6c8e1681ae81365e72bebcdeff3a11f1121
sha512 007e7707bce6d6f87bac6434faf6273485122908e30adeb3147e8875a47601481ed39d70ab4573c10d44329e65f48710129fc39356af1448d73c484970e6f8de
ripemd-160 d7fcc0049a632dfdb776bc98951bc838426cb86c

987990987 as geometric shapes

Circle

Radius = n
Diameter 1975981974
Circumference 6207730453.1443
Area 3.066590868716E+18

Sphere

Radius = n
Volume 4.0396855188105E+27
Surface area 1.2266363474864E+19
Circumference 6207730453.1443

Square

Length = n
Perimeter 3951963948
Area 976126190393234169
Diagonal 1397230253.3178

Cube

Length = n
Surface area 5856757142359405014
Volume 9.6440387828316E+26
Space diagonal 1711250586.9041

Equilateral Triangle

Length = n
Perimeter 2963972961
Area 4.2267503908993E+17
Altitude 855625293.45206

Triangular Pyramid

Length = n
Surface area 4.2267503908993E+17
Volume 1.1365608702277E+26
Height 465743417.77259