18642945 (number)

18642945 is an odd 8-digits composite number following 18642944 and preceding 18642946. In scientific notation, it is written as 1.8642945 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 9905280 positive integers (up to 18642945) that are relatively prime to 18642945.

Interesting facts

Basic properties

Name

Name eighteen million six hundred forty-two thousand nine hundred forty-five

Notation

Scientific notation 1.8642945 × 10^7
Engineering notation 1.8642945 × 10^6

Prime Factorization of 18642945

Prime Factorization 3 × 5 × 281 × 4423

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 18642945
Product of the distinct prime numbers

The prime factorization of 18642945 is 3 × 5 × 281 × 4423. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 7, 80, 78, 486, 434, 5830, 9041, 60452, 65460, 517382, 212288, 3058983, 4748333, 11309430, 57542200, 386665561, 215348075, 4705521259, 9982666904

Basic calculations (n = 18642945)

Multiplication

n×y
n×2 37285890
n×3 55928835
n×4 74571780
n×5 93214725

Division

n÷y
n÷2 9321472.5
n÷3 6214315
n÷3 4660736.25
n÷5 3728589

Exponentiation

ny
n2 347559398273025
n3 6.4795307462371E+21
n4 1.2079753532791E+29
n5 2.2520218072537E+36

Nth Root

y√n
2√n 4317.7476767407
3√n 265.15806400185
4√n 65.70957066319
5√n 28.451351665676

Divisors of 18642945

1, 3, 5, 15, 281, 843, 1405, 4215, 4423, 13269, 22115, 66345, 1242863, 3728589, 6214315, 18642945

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 -18642944
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 18642945 can be divided by 16 positive divisors. The sum of these divisors (counting 18642945) is 1, the average is 0.0625.

Base conversion 18642945

Base System Value
2 Binary 1000111000111100000000001
3 Ternary 1022002011022110
4 Quaternary 1013013200001
5 Quinary 14233033240
6 Senary 1503325533
8 Octal 107074001
10 Decimal 18642945
12 Duodecimal 62b08a9
16 Hexadecimal 11c7801
20 Vigesimal 5ga775
36 Base36 b3kzl

Cryptographic Hash Functions

md5 0b57d8d6dbe2514af63fecf8f7480a09
sha1 c511d23f3bf153d2b778b395638200446fa94719
sha256 0093ac63544bf610c7c873e576992d1feeb507d6699a23a9dd9d500ca69b1321
sha512 fae0d968d32173bcf8624ff5df49dc8b021125688cfc1285258b8aa80452509952b1802cc43359b5f5d11151bf66864d968218c9ef775b155f67acc5dd129d2a
ripemd-160 f9bf82a578989f85eb05a6e516ab99d411358a22

18642945 as geometric shapes

Circle

Radius = n
Diameter 37285890
Circumference 117137078.10656
Area 1.0918900523006E+15

Sphere

Radius = n
Volume 2.714139492145E+22
Surface area 4.3675602092025E+15
Circumference 117137078.10656

Square

Length = n
Perimeter 74571780
Area 347559398273025
Diagonal 26365105.661576

Cube

Length = n
Surface area 2085356389638150
Volume 6.4795307462371E+21
Space diagonal 32290527.942712

Equilateral Triangle

Length = n
Perimeter 55928835
Area 1.5049763411424E+14
Altitude 16145263.971356

Triangular Pyramid

Length = n
Surface area 1.5049763411424E+14
Volume 7.6362002159516E+20
Height 8788368.5538586