18389987 (number)

18389987 is an odd 8-digits composite number following 18389986 and preceding 18389988. In scientific notation, it is written as 1.8389987 × 10^7. The sum of its digits is 53. It has a total of 4 prime factors and 16 positive divisors. There are 14256000 positive integers (up to 18389987) that are relatively prime to 18389987.

Interesting facts

Basic properties

Name

Name eighteen million three hundred eighty-nine thousand nine hundred eighty-seven

Notation

Scientific notation 1.8389987 × 10^7
Engineering notation 1.8389987 × 10^6

Prime Factorization of 18389987

Prime Factorization 11 × 7 × 241 × 991

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 18389987
Product of the distinct prime numbers

The prime factorization of 18389987 is 11 × 7 × 241 × 991. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 2, 77, 48, 688, 385, 6446, 8344, 2820, 99719, 292677, 833786, 128426, 483739, 73122402, 1164643, 739094618, 353610036, 1594107306, 5315763222

Basic calculations (n = 18389987)

Multiplication

n×y
n×2 36779974
n×3 55169961
n×4 73559948
n×5 91949935

Division

n÷y
n÷2 9194993.5
n÷3 6129995.6666667
n÷3 4597496.75
n÷5 3677997.4

Exponentiation

ny
n2 338191621860169
n3 6.2193395295174E+21
n4 1.1437357309641E+29
n5 2.1033285223866E+36

Nth Root

y√n
2√n 4288.3548127458
3√n 263.95332718687
4√n 65.485531323689
5√n 28.373720376887

Divisors of 18389987

1, 7, 11, 77, 241, 991, 1687, 2651, 6937, 10901, 18557, 76307, 238831, 1671817, 2627141, 18389987

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18389986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18389987 can be divided by 16 positive divisors. The sum of these divisors (counting 18389987) is 1, the average is 0.0625.

Base conversion 18389987

Base System Value
2 Binary 1000110001001101111100011
3 Ternary 1021121022022122
4 Quaternary 1012021233203
5 Quinary 14201434422
6 Senary 1454054455
8 Octal 106115743
10 Decimal 18389987
12 Duodecimal 61aa42b
16 Hexadecimal 1189be3
20 Vigesimal 5eiej7
36 Base36 ay5sz

Cryptographic Hash Functions

md5 8944c12b3e8f85cf92d5713838f3705c
sha1 370057e47987cfb7d70f8c3e9ecc0b5975c9f036
sha256 580040e8aede80395dd78e57f5e24b84cd2c40b7795f3abc1887d82fcf886466
sha512 0227579bf2e708d1322a3875e6825a5008e556172b0aa26d5e4294f802d94d9e48eb141f8ddd16ef5af7fd4dd6611541ca096f83ea365092e83342f02de32fc4
ripemd-160 285894b35d49c74fb994b0c24a4cf902c5c64830

18389987 as geometric shapes

Circle

Radius = n
Diameter 36779974
Circumference 115547696.11762
Area 1.0624603147415E+15

Sphere

Radius = n
Volume 2.6051508501483E+22
Surface area 4.2498412589661E+15
Circumference 115547696.11762

Square

Length = n
Perimeter 73559948
Area 338191621860169
Diagonal 26007369.027265

Cube

Length = n
Surface area 2029149731161014
Volume 6.2193395295174E+21
Space diagonal 31852391.834531

Equilateral Triangle

Length = n
Perimeter 55169961
Area 1.4644126793898E+14
Altitude 15926195.917266

Triangular Pyramid

Length = n
Surface area 1.4644126793898E+14
Volume 7.3295619263722E+20
Height 8669123.0090883