21085870 (number)

21085870 is an even 8-digits composite number following 21085869 and preceding 21085871. In scientific notation, it is written as 2.1085870 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 32 positive divisors. There are 7655040 positive integers (up to 21085870) that are relatively prime to 21085870.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-five thousand eight hundred seventy

Notation

Scientific notation 2.1085870 × 10^7
Engineering notation 2.1085870 × 10^6

Prime Factorization of 21085870

Prime Factorization 2 × 5 × 13 × 61 × 2659

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 21085870
Product of the distinct prime numbers

The prime factorization of 21085870 is 2 × 5 × 13 × 61 × 2659. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 9, 38, 21, 3, 64, 5778, 7197, 9968, 36999, 16823, 620127, 629820, 9110964, 44936035, 93062185, 753013940, 50773865, 1987203103, 9678363528

Basic calculations (n = 21085870)

Multiplication

n×y
n×2 42171740
n×3 63257610
n×4 84343480
n×5 105429350

Division

n÷y
n÷2 10542935
n÷3 7028623.3333333
n÷3 5271467.5
n÷5 4217174

Exponentiation

ny
n2 444613913656900
n3 9.3750711835606E+21
n4 1.9768153221731E+29
n5 4.1682870897349E+36

Nth Root

y√n
2√n 4591.9353218442
3√n 276.26795198748
4√n 67.763820153856
5√n 29.160724169421

Divisors of 21085870

1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 305, 610, 793, 1586, 2659, 3965, 5318, 7930, 13295, 26590, 34567, 69134, 162199, 172835, 324398, 345670, 810995, 1621990, 2108587, 4217174, 10542935, 21085870

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21085869
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21085870 can be divided by 32 positive divisors. The sum of these divisors (counting 21085870) is 1, the average is 0.03125.

Base conversion 21085870

Base System Value
2 Binary 1010000011011111010101110
3 Ternary 1110200021101011
4 Quaternary 1100123322232
5 Quinary 20344221440
6 Senary 2031535434
8 Octal 120337256
10 Decimal 21085870
12 Duodecimal 708a57a
16 Hexadecimal 141beae
20 Vigesimal 6bfeda
36 Base36 cjxym

Cryptographic Hash Functions

md5 0a8cfccff933ad2aa2a29e0215e5c454
sha1 67aef09b5a42bf78cdedfc358a03cd4234f96f78
sha256 a1ee8b95328a7492764492ff05802664e4800dfc0021ef6cad730aff31a96d3a
sha512 93a120d456fb0e7eb9210f6be092b8f8ef86a82d30a6aee5b3ea66da787b544b67ff0fb64153467afcb84f9f814d09237737b886bd2c2a41beb73f4765e1a5bb
ripemd-160 77520ff93be4ecbac3876916e1a56358d2eefb60

21085870 as geometric shapes

Circle

Radius = n
Diameter 42171740
Circumference 132486428.5731
Area 1.3967958048283E+15

Sphere

Radius = n
Volume 3.9270206342874E+22
Surface area 5.5871832193133E+15
Circumference 132486428.5731

Square

Length = n
Perimeter 84343480
Area 444613913656900
Diagonal 29819923.328436

Cube

Length = n
Surface area 2667683481941400
Volume 9.3750711835606E+21
Space diagonal 36521798.161792

Equilateral Triangle

Length = n
Perimeter 63257610
Area 1.9252347205145E+14
Altitude 18260899.080896

Triangular Pyramid

Length = n
Surface area 1.9252347205145E+14
Volume 1.1048627346671E+21
Height 9939974.442812