21781468 (number)

21781468 is an even 8-digits composite number following 21781467 and preceding 21781469. In scientific notation, it is written as 2.1781468 × 10^7. The sum of its digits is 37. It has a total of 5 prime factors and 24 positive divisors. There are 10484160 positive integers (up to 21781468) that are relatively prime to 21781468.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1781468 × 10^7
Engineering notation 2.1781468 × 10^6

Prime Factorization of 21781468

Prime Factorization 2 × 2 × 31 × 269 × 653

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10890734
Product of the distinct prime numbers

The prime factorization of 21781468 is 2 × 2 × 31 × 269 × 653. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 9, 32, 85, 903, 759, 7591, 6076, 91468, 7757, 707650, 834147, 2499770, 5659508, 6647441, 8917708, 841187013, 381925683, 3219973470, 9557022821

Basic calculations (n = 21781468)

Multiplication

n×y
n×2 43562936
n×3 65344404
n×4 87125872
n×5 108907340

Division

n÷y
n÷2 10890734
n÷3 7260489.3333333
n÷3 5445367
n÷5 4356293.6

Exponentiation

ny
n2 474432348235024
n3 1.0333833011246E+22
n4 2.250860530518E+29
n5 4.9027046617941E+36

Nth Root

y√n
2√n 4667.0620308712
3√n 279.27306333816
4√n 68.31589881478
5√n 29.350630110836

Divisors of 21781468

1, 2, 4, 31, 62, 124, 269, 538, 653, 1076, 1306, 2612, 8339, 16678, 20243, 33356, 40486, 80972, 175657, 351314, 702628, 5445367, 10890734, 21781468

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21781467
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21781468 can be divided by 24 positive divisors. The sum of these divisors (counting 21781468) is 1, the average is 0.041666666666667.

Base conversion 21781468

Base System Value
2 Binary 1010011000101101111011100
3 Ternary 1111222121120001
4 Quaternary 1103011233130
5 Quinary 21034001333
6 Senary 2054504044
8 Octal 123055734
10 Decimal 21781468
12 Duodecimal 7365024
16 Hexadecimal 14c5bdc
20 Vigesimal 6g2dd8
36 Base36 cyuos

Cryptographic Hash Functions

md5 9bab252771ed9391d8a33cd5b458fb88
sha1 15f5d64a626d970f72b166a9eab5303e34bf6d24
sha256 149f480a3bf9d0aea74ddb3f39ee2dd1a1d04aadcc86caf60af5a7356154a8e4
sha512 ca67f606a5ac9b2993df24933ba5a72db4a081a01c40a8c7faa2ec85746e9ed610f14a610b6fc84412955f20bcb3c3c8ecc5147e8cd87624f218a4f0ae783f16
ripemd-160 6a73f70cd3fbcb9c1f1fa0157ff0a5b2ea2c0f96

21781468 as geometric shapes

Circle

Radius = n
Diameter 43562936
Circumference 136856999.7064
Area 1.4904731798405E+15

Sphere

Radius = n
Volume 4.3286258495406E+22
Surface area 5.961892719362E+15
Circumference 136856999.7064

Square

Length = n
Perimeter 87125872
Area 474432348235024
Diagonal 30803647.453996

Cube

Length = n
Surface area 2846594089410144
Volume 1.0333833011246E+22
Space diagonal 37726609.239436

Equilateral Triangle

Length = n
Perimeter 65344404
Area 2.0543523297432E+14
Altitude 18863304.619718

Triangular Pyramid

Length = n
Surface area 2.0543523297432E+14
Volume 1.2178538996502E+21
Height 10267882.484665