21478891 (number)

21478891 is an odd 8-digits composite number following 21478890 and preceding 21478892. In scientific notation, it is written as 2.1478891 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors. There are 17915040 positive integers (up to 21478891) that are relatively prime to 21478891.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1478891 × 10^7
Engineering notation 2.1478891 × 10^6

Prime Factorization of 21478891

Prime Factorization 7 × 59 × 131 × 397

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21478891
Product of the distinct prime numbers

The prime factorization of 21478891 is 7 × 59 × 131 × 397. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 6, 3, 78, 581, 880, 736, 4299, 47409, 78298, 816638, 896468, 6515826, 8519496, 32892853, 77910880, 568343016, 632003368, 339725522, 8425884213

Basic calculations (n = 21478891)

Multiplication

n×y
n×2 42957782
n×3 64436673
n×4 85915564
n×5 107394455

Division

n÷y
n÷2 10739445.5
n÷3 7159630.3333333
n÷3 5369722.75
n÷5 4295778.2

Exponentiation

ny
n2 461342758589881
n3 9.9091308253914E+21
n4 2.1283714090332E+29
n5 4.5715057502141E+36

Nth Root

y√n
2√n 4634.5324467523
3√n 277.9738558648
4√n 68.07740041124
5√n 29.268628400894

Divisors of 21478891

1, 7, 59, 131, 397, 413, 917, 2779, 7729, 23423, 52007, 54103, 163961, 364049, 3068413, 21478891

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 -21478890
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 21478891 can be divided by 16 positive divisors. The sum of these divisors (counting 21478891) is 1, the average is 0.0625.

Base conversion 21478891

Base System Value
2 Binary 1010001111011110111101011
3 Ternary 1111102020111111
4 Quaternary 1101323313223
5 Quinary 20444311031
6 Senary 2044211151
8 Octal 121736753
10 Decimal 21478891
12 Duodecimal 7239ab7
16 Hexadecimal 147bdeb
20 Vigesimal 6e4h4b
36 Base36 csd7v

Cryptographic Hash Functions

md5 ea6bb7913e224b2288fea1fc30dcf58f
sha1 ded3a10701d6b2aa696516ca4d992513a695701e
sha256 0a4659a652fed5906610738aef7ab55d9f3bad0096b5236371ec6b005b94f2f0
sha512 5088564c3aa8d7dd2991b6258602ecbde8c94d8da86fedbb8ebb5336068a6b1d3b853aea56bfe809e961a0d3f87e643a9484749ed226bbe29be2beacdea1d55f
ripemd-160 7a8610133637df3149e8fcd0ab1c8b7d6dc77a85

21478891 as geometric shapes

Circle

Radius = n
Diameter 42957782
Circumference 134955852.34571
Area 1.4493510211728E+15

Sphere

Radius = n
Volume 4.1507270139346E+22
Surface area 5.7974040846913E+15
Circumference 134955852.34571

Square

Length = n
Perimeter 85915564
Area 461342758589881
Diagonal 30375738.956933

Cube

Length = n
Surface area 2768056551539286
Volume 9.9091308253914E+21
Space diagonal 37202530.502234

Equilateral Triangle

Length = n
Perimeter 64436673
Area 1.9976727439541E+14
Altitude 18601265.251117

Triangular Pyramid

Length = n
Surface area 1.9976727439541E+14
Volume 1.1678022670498E+21
Height 10125246.318978