21491806 (number)

21491806 is an even 8-digits composite number following 21491805 and preceding 21491807. In scientific notation, it is written as 2.1491806 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 9124056 positive integers (up to 21491806) that are relatively prime to 21491806.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491806 × 10^7
Engineering notation 2.1491806 × 10^6

Prime Factorization of 21491806

Prime Factorization 2 × 7 × 107 × 14347

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21491806
Product of the distinct prime numbers

The prime factorization of 21491806 is 2 × 7 × 107 × 14347. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 3, 74, 91, 125, 761, 3533, 9306, 87073, 28695, 215978, 246247, 6520433, 4748786, 63417856, 64532888, 464957735, 782998038, 4962947994, 6076960669

Basic calculations (n = 21491806)

Multiplication

n×y
n×2 42983612
n×3 64475418
n×4 85967224
n×5 107459030

Division

n÷y
n÷2 10745903
n÷3 7163935.3333333
n÷3 5372951.5
n÷5 4298361.2

Exponentiation

ny
n2 461897725141636
n3 9.9270163005854E+21
n4 2.1334950849102E+29
n5 4.5852662466843E+36

Nth Root

y√n
2√n 4635.9255818013
3√n 278.02955881894
4√n 68.087631636013
5√n 29.272147329807

Divisors of 21491806

1, 2, 7, 14, 107, 214, 749, 1498, 14347, 28694, 100429, 200858, 1535129, 3070258, 10745903, 21491806

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491805
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491806 can be divided by 16 positive divisors. The sum of these divisors (counting 21491806) is 1, the average is 0.0625.

Base conversion 21491806

Base System Value
2 Binary 1010001111111000001011110
3 Ternary 1111102220012211
4 Quaternary 1101333001132
5 Quinary 21000214211
6 Senary 2044351034
8 Octal 121770136
10 Decimal 21491806
12 Duodecimal 724547a
16 Hexadecimal 147f05e
20 Vigesimal 6e69a6
36 Base36 csn6m

Cryptographic Hash Functions

md5 7a3db6237269b93f5c07351bacc91afb
sha1 96f70fe2bb380873453046c3fb836923edce74d5
sha256 1e28a4c3caf6aae28befd5d07c4fe5ba10cc21bf034d7da692596d992d74f599
sha512 8468d4f4617b497498381094cdd1fcea9cf3b6b0ba74a759da59b1a30730ab2a8acc917bfc481f6210258615fdd5e708a09d833fbd692de0174e4c8445919fee
ripemd-160 ab4fb148cbd4ddbae1dfa2b29d1a264f4f2da81e

21491806 as geometric shapes

Circle

Radius = n
Diameter 42983612
Circumference 135036999.68395
Area 1.4510945000148E+15

Sphere

Radius = n
Volume 4.1582188642647E+22
Surface area 5.8043780000592E+15
Circumference 135036999.68395

Square

Length = n
Perimeter 85967224
Area 461897725141636
Diagonal 30394003.525091

Cube

Length = n
Surface area 2771386350849816
Volume 9.9270163005854E+21
Space diagonal 37224899.938414

Equilateral Triangle

Length = n
Perimeter 64475418
Area 2.0000758196145E+14
Altitude 18612449.969207

Triangular Pyramid

Length = n
Surface area 2.0000758196145E+14
Volume 1.1699100905156E+21
Height 10131334.508364