21004781 (number)

21004781 is an odd 8-digits composite number following 21004780 and preceding 21004782. In scientific notation, it is written as 2.1004781 × 10^7. The sum of its digits is 23. It has a total of 4 prime factors and 12 positive divisors. There are 17942400 positive integers (up to 21004781) that are relatively prime to 21004781.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1004781 × 10^7
Engineering notation 2.1004781 × 10^6

Prime Factorization of 21004781

Prime Factorization 7 × 7 × 401 × 1069

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 3000683
Product of the distinct prime numbers

The prime factorization of 21004781 is 7 × 7 × 401 × 1069. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 3, 18, 86, 609, 481, 5345, 8881, 20045, 95180, 58451, 334399, 1609759, 9057739, 27081885, 81522521, 112194923, 185103302, 5069667085, 2202904749

Basic calculations (n = 21004781)

Multiplication

n×y
n×2 42009562
n×3 63014343
n×4 84019124
n×5 105023905

Division

n÷y
n÷2 10502390.5
n÷3 7001593.6666667
n÷3 5251195.25
n÷5 4200956.2

Exponentiation

ny
n2 441200824857961
n3 9.2673267031608E+21
n4 1.9465816785535E+29
n5 4.0887521856628E+36

Nth Root

y√n
2√n 4583.0973151353
3√n 275.91335321844
4√n 67.698576906278
5√n 29.138261166715

Divisors of 21004781

1, 7, 49, 401, 1069, 2807, 7483, 19649, 52381, 428669, 3000683, 21004781

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 -21004780
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 21004781 can be divided by 12 positive divisors. The sum of these divisors (counting 21004781) is 1, the average is 0.083333333333333.

Base conversion 21004781

Base System Value
2 Binary 1010000001000000111101101
3 Ternary 1110112011010212
4 Quaternary 1100020013231
5 Quinary 20334123111
6 Senary 2030112205
8 Octal 120100755
10 Decimal 21004781
12 Duodecimal 704b665
16 Hexadecimal 14081ed
20 Vigesimal 6b5bj1
36 Base36 ci7e5

Cryptographic Hash Functions

md5 cf544592af0aff81c35eb254526b2358
sha1 fb579021de8538c0e540a899b5f6927518d8e5fe
sha256 bbff31a43bc089dfa62e36f243b296950a635038513f46a8a7bd18f817466779
sha512 f8489686a61659aa03c45d9c2fbadcd80bc51a87b4d1c3b98b34a7c0bb96d99e8ebf8ff1ad947c24817e2bcf1545fd6d574798d47fb975b464de19f6dd6a059d
ripemd-160 aafd01777546bb08789ebd47d3aa933608aa6e63

21004781 as geometric shapes

Circle

Radius = n
Diameter 42009562
Circumference 131976931.35972
Area 1.3860732701315E+15

Sphere

Radius = n
Volume 3.8818887318755E+22
Surface area 5.5442930805261E+15
Circumference 131976931.35972

Square

Length = n
Perimeter 84019124
Area 441200824857961
Diagonal 29705246.164877

Cube

Length = n
Surface area 2647204949147766
Volume 9.2673267031608E+21
Space diagonal 36381347.893857

Equilateral Triangle

Length = n
Perimeter 63014343
Area 1.9104556124882E+14
Altitude 18190673.946929

Triangular Pyramid

Length = n
Surface area 1.9104556124882E+14
Volume 1.0921649258794E+21
Height 9901748.7216256