21287934 (number)

21287934 is an even 8-digits composite number following 21287933 and preceding 21287935. In scientific notation, it is written as 2.1287934 × 10^7. The sum of its digits is 36. It has a total of 6 prime factors and 40 positive divisors. There are 7056720 positive integers (up to 21287934) that are relatively prime to 21287934.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1287934 × 10^7
Engineering notation 2.1287934 × 10^6

Prime Factorization of 21287934

Prime Factorization 2 × 3 × 9 × 3 × 397 × 331

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 7095978
Product of the distinct prime numbers

The prime factorization of 21287934 is 2 × 3 × 9 × 3 × 397 × 331. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21287934)

Multiplication

n×y
n×2 42575868
n×3 63863802
n×4 85151736
n×5 106439670

Division

n÷y
n÷2 10643967
n÷3 7095978
n÷3 5321983.5
n÷5 4257586.8

Exponentiation

ny
n2 453176133988356
n3 9.6471836307193E+21
n4 2.0536860841663E+29
n5 4.3718733816451E+36

Nth Root

y√n
2√n 4613.8849140394
3√n 277.1476316432
4√n 67.925583648868
5√n 29.216400082167

Divisors of 21287934

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21287933
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21287934 can be divided by 40 positive divisors. The sum of these divisors (counting 21287934) is 1, the average is 0.025.

Base conversion 21287934

Base System Value
2 Binary 1010001001101001111111110
3 Ternary 1111001112120000
4 Quaternary 1101031033332
5 Quinary 20422203214
6 Senary 2040135130
8 Octal 121151776
10 Decimal 21287934
12 Duodecimal 71674a6
16 Hexadecimal 144d3fe
20 Vigesimal 6d0jge
36 Base36 co9vi

Cryptographic Hash Functions

md5 b54d55f4c20b5a8936d5cc3a525c6b99
sha1 3cd756e376cede7af3367d95657b875f62f65ba8
sha256 83f6b002b1f099502c4e4ec78b08dc1884815d003c09a66805160733ca496873
sha512 a91adb789a4f05f6819065dcf094743b1b137cacf450697222ef62cbd633a639dd90d5d7915db8dfaccd9b83cdd8839f28ea109fc82bb1af0a6dda8afc149b5c
ripemd-160 fa1409c63aa24ea0c5e2aace5806caaaa09f284e

21287934 as geometric shapes

Circle

Radius = n
Diameter 42575868
Circumference 133756034.12901
Area 1.42369481332E+15

Sphere

Radius = n
Volume 4.0410028296133E+22
Surface area 5.6947792532802E+15
Circumference 133756034.12901

Square

Length = n
Perimeter 85151736
Area 453176133988356
Diagonal 30105684.977703

Cube

Length = n
Surface area 2719056803930136
Volume 9.6471836307193E+21
Space diagonal 36871783.276173

Equilateral Triangle

Length = n
Perimeter 63863802
Area 1.9623102221137E+14
Altitude 18435891.638086

Triangular Pyramid

Length = n
Surface area 1.9623102221137E+14
Volume 1.1369314941056E+21
Height 10035228.325901