21897421 (number)

21897421 is an odd 8-digits composite number following 21897420 and preceding 21897422. In scientific notation, it is written as 2.1897421 × 10^7. The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors. There are 17325360 positive integers (up to 21897421) that are relatively prime to 21897421.

Interesting facts

Basic properties

Name

Name twenty-one million eight hundred ninety-seven thousand four hundred twenty-one

Notation

Scientific notation 2.1897421 × 10^7
Engineering notation 2.1897421 × 10^6

Prime Factorization of 21897421

Prime Factorization 7 × 13 × 240631

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21897421
Product of the distinct prime numbers

The prime factorization of 21897421 is 7 × 13 × 240631. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 4, 58, 10, 695, 205, 3721, 4911, 62256, 79941, 280932, 475634, 5630406, 659911, 55018495, 65014755, 308449319, 222787931, 8735008518, 2676190031

Basic calculations (n = 21897421)

Multiplication

n×y
n×2 43794842
n×3 65692263
n×4 87589684
n×5 109487105

Division

n÷y
n÷2 10948710.5
n÷3 7299140.3333333
n÷3 5474355.25
n÷5 4379484.2

Exponentiation

ny
n2 479497046451241
n3 1.0499748694399E+22
n4 2.2991741755546E+29
n5 5.0345984874448E+36

Nth Root

y√n
2√n 4679.4680253208
3√n 279.76775384513
4√n 68.406637289965
5√n 29.381813222475

Divisors of 21897421

1, 7, 13, 91, 240631, 1684417, 3128203, 21897421

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21897420
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21897421 can be divided by 8 positive divisors. The sum of these divisors (counting 21897421) is 1, the average is 0.125.

Base conversion 21897421

Base System Value
2 Binary 1010011100010000011001101
3 Ternary 1112012111121121
4 Quaternary 1103202003031
5 Quinary 21101204141
6 Senary 2101200541
8 Octal 123420315
10 Decimal 21897421
12 Duodecimal 7400151
16 Hexadecimal 14e20cd
20 Vigesimal 6gh3b1
36 Base36 d1c5p

Cryptographic Hash Functions

md5 1214b61e4ad70b1c98231b41f8bee116
sha1 d5f5125b25d88a0d760e10d157e4afd7c7975381
sha256 03895bfab81b2451d1ceec1254f753df6d3290e8b9f9a5d4eaf08f88ea81d3eb
sha512 1d48f6e3a88793a90f3db0b8238184fb1e0eb3163cd5a7a357846b0f80a5bf59050d8d2a88b5744224b30821bc9b5c36e13548f72d60bf87dc68701da8ec3962
ripemd-160 e913fe84a686bc7807f1fdf9352330543867b853

21897421 as geometric shapes

Circle

Radius = n
Diameter 43794842
Circumference 137585553.89233
Area 1.5063843985492E+15

Sphere

Radius = n
Volume 4.3981244483819E+22
Surface area 6.0255375941969E+15
Circumference 137585553.89233

Square

Length = n
Perimeter 87589684
Area 479497046451241
Diagonal 30967629.759193

Cube

Length = n
Surface area 2876982278707446
Volume 1.0499748694399E+22
Space diagonal 37927445.726726

Equilateral Triangle

Length = n
Perimeter 65692263
Area 2.0762831163319E+14
Altitude 18963722.863363

Triangular Pyramid

Length = n
Surface area 2.0762831163319E+14
Volume 1.2374072504274E+21
Height 10322543.253064