21409987 (number)

21409987 is an odd 8-digits composite number following 21409986 and preceding 21409988. In scientific notation, it is written as 2.1409987 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 12 positive divisors. There are 19268480 positive integers (up to 21409987) that are relatively prime to 21409987.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred nine thousand nine hundred eighty-seven

Notation

Scientific notation 2.1409987 × 10^7
Engineering notation 2.1409987 × 10^6

Prime Factorization of 21409987

Prime Factorization 17 × 23 × 17 × 3221

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 1259411
Product of the distinct prime numbers

The prime factorization of 21409987 is 17 × 23 × 17 × 3221. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 4, 98, 100, 647, 506, 9001, 1754, 31510, 58635, 326878, 922953, 8713226, 2717224, 12808801, 1945386, 421178493, 990513161, 3521432985, 2170831536

Basic calculations (n = 21409987)

Multiplication

n×y
n×2 42819974
n×3 64229961
n×4 85639948
n×5 107049935

Division

n÷y
n÷2 10704993.5
n÷3 7136662.3333333
n÷3 5352496.75
n÷5 4281997.4

Exponentiation

ny
n2 458387543340169
n3 9.814071343875E+21
n4 2.1011913988944E+29
n5 4.498648053484E+36

Nth Root

y√n
2√n 4627.0927157341
3√n 277.67629195196
4√n 68.022736755692
5√n 29.249825582673

Divisors of 21409987

1, 17, 23, 289, 391, 3221, 6647, 54757, 74083, 930869, 1259411, 21409987

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21409986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21409987 can be divided by 12 positive divisors. The sum of these divisors (counting 21409987) is 1, the average is 0.083333333333333.

Base conversion 21409987

Base System Value
2 Binary 1010001101011000011000011
3 Ternary 1111021201222111
4 Quaternary 1101223003003
5 Quinary 20440104422
6 Senary 2042520151
8 Octal 121530303
10 Decimal 21409987
12 Duodecimal 7206057
16 Hexadecimal 146b0c3
20 Vigesimal 6dg4j7
36 Base36 cqw1v

Cryptographic Hash Functions

md5 2887282282abd114f6bd63b03ed9c655
sha1 26c52a302076b84980de46422dd25f1e0ba1a1fd
sha256 9cc9103f822e3aed082a4b4d439236e8ff4049c14ac1c0cf661cec90d5c2bb1b
sha512 dacf7b11a48e19e33abec7781ebafc7e9fde4d9c4b6606f70cf10024ce2f11b7556a0dcda013e523fccd5489d34964df9194217a6cab44f030dba482ecfb6558
ripemd-160 84f6e95de98b9c27a819dcfe52dfdab7bbcc756a

21409987 as geometric shapes

Circle

Radius = n
Diameter 42819974
Circumference 134522915.74531
Area 1.4400669386545E+15

Sphere

Radius = n
Volume 4.1109085914298E+22
Surface area 5.7602677546182E+15
Circumference 134522915.74531

Square

Length = n
Perimeter 85639948
Area 458387543340169
Diagonal 30278293.985632

Cube

Length = n
Surface area 2750325260041014
Volume 9.814071343875E+21
Space diagonal 37083185.273389

Equilateral Triangle

Length = n
Perimeter 64229961
Area 1.9848762865546E+14
Altitude 18541592.636695

Triangular Pyramid

Length = n
Surface area 1.9848762865546E+14
Volume 1.1565993997171E+21
Height 10092764.661877