21385280 (number)

21385280 is an even 8-digits composite number following 21385279 and preceding 21385281. In scientific notation, it is written as 2.1385280 × 10^7. The sum of its digits is 29. It has a total of 8 prime factors and 28 positive divisors. There are 7331328 positive integers (up to 21385280) that are relatively prime to 21385280.

Interesting facts

Basic properties

Name

Name twenty-one million three hundred eighty-five thousand two hundred eighty

Notation

Scientific notation 2.1385280 × 10^7
Engineering notation 2.1385280 × 10^6

Prime Factorization of 21385280

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 35 × 9547

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 668290
Product of the distinct prime numbers

The prime factorization of 21385280 is 2 × 2 × 2 × 2 × 2 × 2 × 35 × 9547. Since it has a total of 8 prime factors.

Most popular turbo-numbers

4, 2, 90, 12, 358, 152, 7568, 4346, 2404, 39068, 682464, 748985, 2882123, 9988168, 77775235, 58307100, 666708347, 886177704, 3487264174, 5150750398

Basic calculations (n = 21385280)

Multiplication

n×y
n×2 42770560
n×3 64155840
n×4 85541120
n×5 106926400

Division

n÷y
n÷2 10692640
n÷3 7128426.6666667
n÷3 5346320
n÷5 4277056

Exponentiation

ny
n2 457330200678400
n3 9.7801343939638E+21
n4 2.0915091245255E+29
n5 4.4727508250532E+36

Nth Root

y√n
2√n 4624.4221260607
3√n 277.56943856543
4√n 68.003103797259
5√n 29.243071638758

Divisors of 21385280

1, 2, 4, 8, 16, 32, 35, 64, 70, 140, 280, 560, 1120, 2240, 9547, 19094, 38188, 76376, 152752, 305504, 334145, 611008, 668290, 1336580, 2673160, 5346320, 10692640, 21385280

28 divisors

τ Total Divisors 28
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21385279
Sum of the proper positive divisors of n
A Arithmetic Mean 0.035714285714286
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 28
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21385280 can be divided by 28 positive divisors. The sum of these divisors (counting 21385280) is 1, the average is 0.035714285714286.

Base conversion 21385280

Base System Value
2 Binary 1010001100101000001000000
3 Ternary 1111020111002102
4 Quaternary 1101211001000
5 Quinary 20433312110
6 Senary 2042205532
8 Octal 121450100
10 Decimal 21385280
12 Duodecimal 71b38a8
16 Hexadecimal 1465040
20 Vigesimal 6dd340
36 Base36 cqczk

Cryptographic Hash Functions

md5 b2cd52b1f519a533a5a6feaa65b4707c
sha1 34e383df749ee06be3866821ae2743ed0c22e01a
sha256 e2d0510bbd55b14a2b3f74cae63dc74964130f8868d4c03b7ac58c699e841660
sha512 25ba71b581b33d4a21ece8df1156494201dc25b41e84f2792d32c376e967e4eb486ef35af3dd4666b6a080814a26db4a92c970b9ed21dc041aad3bc05515465d
ripemd-160 96dfc33e93530b6296d9a4e89a9e3c539aa75f72

21385280 as geometric shapes

Circle

Radius = n
Diameter 42770560
Circumference 134367677.08592
Area 1.436745198716E+15

Sphere

Radius = n
Volume 4.096693115093E+22
Surface area 5.746980794864E+15
Circumference 134367677.08592

Square

Length = n
Perimeter 85541120
Area 457330200678400
Diagonal 30243353.011146

Cube

Length = n
Surface area 2743981204070400
Volume 9.7801343939638E+21
Space diagonal 37040391.494087

Equilateral Triangle

Length = n
Perimeter 64155840
Area 1.9802978585266E+14
Altitude 18520195.747043

Triangular Pyramid

Length = n
Surface area 1.9802978585266E+14
Volume 1.1525998918146E+21
Height 10081117.670382