21031728 (number)

21031728 is an even 8-digits composite number following 21031727 and preceding 21031729. In scientific notation, it is written as 2.1031728 × 10^7. The sum of its digits is 24. It has a total of 8 prime factors and 60 positive divisors. There are 6755840 positive integers (up to 21031728) that are relatively prime to 21031728.

Interesting facts

Basic properties

Name

Name twenty-one million thirty-one thousand seven hundred twenty-eight

Notation

Scientific notation 2.1031728 × 10^7
Engineering notation 2.1031728 × 10^6

Prime Factorization of 21031728

Prime Factorization 2 × 2 × 2 × 2 × 3 × 29 × 29 × 521

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 90654
Product of the distinct prime numbers

The prime factorization of 21031728 is 2 × 2 × 2 × 2 × 3 × 29 × 29 × 521. Since it has a total of 8 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21031728)

Multiplication

n×y
n×2 42063456
n×3 63095184
n×4 84126912
n×5 105158640

Division

n÷y
n÷2 10515864
n÷3 7010576
n÷3 5257932
n÷5 4206345.6

Exponentiation

ny
n2 442333582665984
n3 9.3030395958965E+21
n4 1.9565899835412E+29
n5 4.1150468341364E+36

Nth Root

y√n
2√n 4586.0361969788
3√n 276.03129239822
4√n 67.720279067491
5√n 29.145733618883

Divisors of 21031728

60 divisors

τ Total Divisors 60
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21031727
Sum of the proper positive divisors of n
A Arithmetic Mean 0.016666666666667
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 60
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21031728 can be divided by 60 positive divisors. The sum of these divisors (counting 21031728) is 1, the average is 0.016666666666667.

Base conversion 21031728

Base System Value
2 Binary 1010000001110101100110000
3 Ternary 1110120112002220
4 Quaternary 1100032230300
5 Quinary 20341003403
6 Senary 2030441040
8 Octal 120165460
10 Decimal 21031728
12 Duodecimal 7063180
16 Hexadecimal 140eb30
20 Vigesimal 6b8j68
36 Base36 cis6o

Cryptographic Hash Functions

md5 436e662b4f29ca73b543ed30b7c54e0d
sha1 54231be3ae3fca40f43bda779400a8187e3c5a55
sha256 716264db8af662a11fdd603a862249a6a33c01119e64507c3f9f4bba95b06f85
sha512 ac5d608633c3a6539515d351f5c5bccf6e9331d90a9eb09d6b8dfd2d8b9a45e66aef8be4b54b524a1fd4ffad235a0e259691ef6e3778b573067526fbe02773e3
ripemd-160 2d0837d430662c9d4459c82d398f502e9d9a03b6

21031728 as geometric shapes

Circle

Radius = n
Diameter 42063456
Circumference 132146244.3542
Area 1.3896319337395E+15

Sphere

Radius = n
Volume 3.8968481134031E+22
Surface area 5.558527734958E+15
Circumference 132146244.3542

Square

Length = n
Perimeter 84126912
Area 442333582665984
Diagonal 29743354.977742

Cube

Length = n
Surface area 2654001495995904
Volume 9.3030395958965E+21
Space diagonal 36428021.466969

Equilateral Triangle

Length = n
Perimeter 63095184
Area 1.9153605976786E+14
Altitude 18214010.733484

Triangular Pyramid

Length = n
Surface area 1.9153605976786E+14
Volume 1.0963737306509E+21
Height 9914451.6592473