18988 (number)

18988 is an even 5-digits composite number following 18987 and preceding 18989. In scientific notation, it is written as 1.8988 × 10^4. The sum of its digits is 34. It has a total of 4 prime factors and 12 positive divisors. There are 9200 positive integers (up to 18988) that are relatively prime to 18988.

Interesting facts

Basic properties

Name

Name eighteen thousand nine hundred eighty-eight

Notation

Scientific notation 1.8988 × 10^4
Engineering notation 1.8988 × 10^3

Prime Factorization of 18988

Prime Factorization 2 × 2 × 101 × 47

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 9494
Product of the distinct prime numbers

The prime factorization of 18988 is 2 × 2 × 101 × 47. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 9, 43, 88, 28, 273, 3416, 5636, 97742, 40347, 816883, 676993, 1760930, 8544583, 74361603, 66459288, 488804017, 50765576, 9392857932, 674809278

Basic calculations (n = 18988)

Multiplication

n×y
n×2 37976
n×3 56964
n×4 75952
n×5 94940

Division

n÷y
n÷2 9494
n÷3 6329.3333333333
n÷3 4747
n÷5 3797.6

Exponentiation

ny
n2 360544144
n3 6846012206272
n4 129992079772692736
n5 2.4682896107239E+21

Nth Root

y√n
2√n 137.79695207079
3√n 26.678397616452
4√n 11.738694649355
5√n 7.172917645753

Divisors of 18988

1, 2, 4, 47, 94, 101, 188, 202, 404, 4747, 9494, 18988

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 -18987
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 18988 can be divided by 12 positive divisors. The sum of these divisors (counting 18988) is 1, the average is 0.083333333333333.

Base conversion 18988

Base System Value
2 Binary 100101000101100
3 Ternary 222001021
4 Quaternary 10220230
5 Quinary 1101423
6 Senary 223524
8 Octal 45054
10 Decimal 18988
12 Duodecimal aba4
16 Hexadecimal 4a2c
20 Vigesimal 2798
36 Base36 eng

Cryptographic Hash Functions

md5 ba8ad81d576f0dc2f54732c1d37e09f3
sha1 c163574f22c14f110ae819f08909ca5c3a314097
sha256 bafb6bdc111d07427a35cc11569bc43a0528b7ea8d6cb9bfdbcc1a712387c996
sha512 9703c1c9fda4935b736dc70b6743cb94912139386668162b17cc945ae1c7f532485dc9f79d9773c5272236e41777e19bfd751afb5a247cd86f5b4c0542e79de7
ripemd-160 8baed13728ad005f4f0ada401e99d6085e019887

18988 as geometric shapes

Circle

Radius = n
Diameter 37976
Circumference 119305.12261273
Area 1132682834.0852

Sphere

Radius = n
Volume 28676508871480
Surface area 4530731336.3409
Circumference 119305.12261273

Square

Length = n
Perimeter 75952
Area 360544144
Diagonal 26853.08712234

Cube

Length = n
Surface area 2163264864
Volume 6846012206272
Space diagonal 32888.180734118

Equilateral Triangle

Length = n
Perimeter 56964
Area 156120193.94486
Altitude 16444.090367059

Triangular Pyramid

Length = n
Surface area 156120193.94486
Volume 806810275856.8
Height 8951.0290407801