21081390 (number)

21081390 is an even 8-digits composite number following 21081389 and preceding 21081391. In scientific notation, it is written as 2.1081390 × 10^7. The sum of its digits is 24. It has a total of 4 prime factors and 16 positive divisors. There are 5068800 positive integers (up to 21081390) that are relatively prime to 21081390.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-one thousand three hundred ninety

Notation

Scientific notation 2.1081390 × 10^7
Engineering notation 2.1081390 × 10^6

Prime Factorization of 21081390

Prime Factorization 2 × 165 × 193 × 331

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21081390
Product of the distinct prime numbers

The prime factorization of 21081390 is 2 × 165 × 193 × 331. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 1, 36, 77, 382, 288, 4169, 4541, 22725, 14855, 202710, 98358, 2007674, 7006731, 59455843, 45563620, 704976698, 991968493, 2788274171, 1721601098

Basic calculations (n = 21081390)

Multiplication

n×y
n×2 42162780
n×3 63244170
n×4 84325560
n×5 105406950

Division

n÷y
n÷2 10540695
n÷3 7027130
n÷3 5270347.5
n÷5 4216278

Exponentiation

ny
n2 444425004332100
n3 9.3690968420767E+21
n4 1.9751358447559E+29
n5 4.1638609046278E+36

Nth Root

y√n
2√n 4591.4474841819
3√n 276.24838488576
4√n 67.760220514561
5√n 29.159484940039

Divisors of 21081390

1, 2, 165, 193, 330, 331, 386, 662, 31845, 54615, 63690, 63883, 109230, 127766, 10540695, 21081390

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 -21081389
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 21081390 can be divided by 16 positive divisors. The sum of these divisors (counting 21081390) is 1, the average is 0.0625.

Base conversion 21081390

Base System Value
2 Binary 1010000011010110100101110
3 Ternary 1110200001020020
4 Quaternary 1100122310232
5 Quinary 20344101030
6 Senary 2031503010
8 Octal 120326456
10 Decimal 21081390
12 Duodecimal 7087a66
16 Hexadecimal 141ad2e
20 Vigesimal 6bf39a
36 Base36 cjui6

Cryptographic Hash Functions

md5 5054afbc9d5186d787ed744020ca0cf2
sha1 3c6c89953a441a21cc690935a6b3fc6ca21c8e14
sha256 76eb360a6beaf12c3af3f575db223eb2802de383a285f5f33f3db95abeaf44d4
sha512 7d559d24b0cd0d88829d8953bac717ce5927fa8c8b275542df607e05fed8d8bbbb0bd976989d73ba0c9f7d0c0c145eeaca4ecfb043c4b2c24306892b5d679d4b
ripemd-160 762d0ba4741532290eb46327ffd83404ea9f6106

21081390 as geometric shapes

Circle

Radius = n
Diameter 42162780
Circumference 132458279.90292
Area 1.3962023286813E+15

Sphere

Radius = n
Volume 3.9245181079786E+22
Surface area 5.5848093147253E+15
Circumference 132458279.90292

Square

Length = n
Perimeter 84325560
Area 444425004332100
Diagonal 29813587.651677

Cube

Length = n
Surface area 2666550025992600
Volume 9.3690968420767E+21
Space diagonal 36514038.574174

Equilateral Triangle

Length = n
Perimeter 63244170
Area 1.924416719143E+14
Altitude 18257019.287087

Triangular Pyramid

Length = n
Surface area 1.924416719143E+14
Volume 1.104158651771E+21
Height 9937862.5505588