21491856 (number)

21491856 is an even 8-digits composite number following 21491855 and preceding 21491857. In scientific notation, it is written as 2.1491856 × 10^7. The sum of its digits is 36. It has a total of 6 prime factors and 20 positive divisors. There are 7163904 positive integers (up to 21491856) that are relatively prime to 21491856.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491856 × 10^7
Engineering notation 2.1491856 × 10^6

Prime Factorization of 21491856

Prime Factorization 2 × 2 × 2 × 2 × 9 × 149249

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2686482
Product of the distinct prime numbers

The prime factorization of 21491856 is 2 × 2 × 2 × 2 × 9 × 149249. Since it has a total of 6 prime factors.

Most popular turbo-numbers

10, 5, 97, 98, 293, 543, 1206, 5067, 85428, 12945, 998064, 300394, 2925578, 1555754, 60344798, 29704347, 677198309, 250517961, 3990185229, 7375626573

Basic calculations (n = 21491856)

Multiplication

n×y
n×2 42983712
n×3 64475568
n×4 85967424
n×5 107459280

Division

n÷y
n÷2 10745928
n÷3 7163952
n÷3 5372964
n÷5 4298371.2

Exponentiation

ny
n2 461899874324736
n3 9.9270855854053E+21
n4 2.1335149390121E+29
n5 4.5853195843096E+36

Nth Root

y√n
2√n 4635.9309744646
3√n 278.02977442773
4√n 68.087671236903
5√n 29.272160949937

Divisors of 21491856

1, 2, 4, 8, 9, 16, 18, 36, 72, 144, 149249, 298498, 596996, 1193992, 1343241, 2387984, 2686482, 5372964, 10745928, 21491856

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491855
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491856 can be divided by 20 positive divisors. The sum of these divisors (counting 21491856) is 1, the average is 0.05.

Base conversion 21491856

Base System Value
2 Binary 1010001111111000010010000
3 Ternary 1111102220021200
4 Quaternary 1101333002100
5 Quinary 21000214411
6 Senary 2044351200
8 Octal 121770220
10 Decimal 21491856
12 Duodecimal 7245500
16 Hexadecimal 147f090
20 Vigesimal 6e69cg
36 Base36 csn80

Cryptographic Hash Functions

md5 7e1321d6d799591f5ace37872951ee81
sha1 c937d447e90a6113db00de775f29566cefdc15e3
sha256 b1736ebf4e3054b459ecb31a17becfcf466afd63fb05ee6d1ceaafa385984067
sha512 45caffd0f6ca0910e990084b7d149419809b55986ed2e03bd4a5baa865d0b91d3e36cbb3134cf042899ae25e3dd5fdb7e8e465fdccad57d5e516d45bf4e482b0
ripemd-160 13b63ec684fc6a2f4a111882370d1a575fe3c21d

21491856 as geometric shapes

Circle

Radius = n
Diameter 42983712
Circumference 135037313.84322
Area 1.4511012518726E+15

Sphere

Radius = n
Volume 4.1582478862222E+22
Surface area 5.8044050074906E+15
Circumference 135037313.84322

Square

Length = n
Perimeter 85967424
Area 461899874324736
Diagonal 30394074.23577

Cube

Length = n
Surface area 2771399245948416
Volume 9.9270855854053E+21
Space diagonal 37224986.540954

Equilateral Triangle

Length = n
Perimeter 64475568
Area 2.0000851258503E+14
Altitude 18612493.270477

Triangular Pyramid

Length = n
Surface area 2.0000851258503E+14
Volume 1.1699182558099E+21
Height 10131358.07859