21491886 (number)

21491886 is an even 8-digits composite number following 21491885 and preceding 21491887. In scientific notation, it is written as 2.1491886 × 10^7. The sum of its digits is 39. It has a total of 5 prime factors and 32 positive divisors. There are 6503040 positive integers (up to 21491886) that are relatively prime to 21491886.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491886 × 10^7
Engineering notation 2.1491886 × 10^6

Prime Factorization of 21491886

Prime Factorization 2 × 3 × 61 × 13 × 4517

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 21491886
Product of the distinct prime numbers

The prime factorization of 21491886 is 2 × 3 × 61 × 13 × 4517. Since it has a total of 5 prime factors.

Most popular turbo-numbers

8, 2, 12, 75, 597, 869, 9895, 7022, 13513, 23181, 274684, 993479, 727416, 8840521, 30453586, 76421291, 214619545, 316554895, 1870959778, 1382366891

Basic calculations (n = 21491886)

Multiplication

n×y
n×2 42983772
n×3 64475658
n×4 85967544
n×5 107459430

Division

n÷y
n÷2 10745943
n÷3 7163962
n÷3 5372971.5
n÷5 4298377.2

Exponentiation

ny
n2 461901163836996
n3 9.927127156452E+21
n4 2.1335268515397E+29
n5 4.585351587123E+36

Nth Root

y√n
2√n 4635.9342100595
3√n 278.02990379285
4√n 68.087694997404
5√n 29.272169122003

Divisors of 21491886

1, 2, 3, 6, 13, 26, 39, 61, 78, 122, 183, 366, 793, 1586, 2379, 4517, 4758, 9034, 13551, 27102, 58721, 117442, 176163, 275537, 352326, 551074, 826611, 1653222, 3581981, 7163962, 10745943, 21491886

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491885
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491886 can be divided by 32 positive divisors. The sum of these divisors (counting 21491886) is 1, the average is 0.03125.

Base conversion 21491886

Base System Value
2 Binary 1010001111111000010101110
3 Ternary 1111102220022210
4 Quaternary 1101333002232
5 Quinary 21000220021
6 Senary 2044351250
8 Octal 121770256
10 Decimal 21491886
12 Duodecimal 7245526
16 Hexadecimal 147f0ae
20 Vigesimal 6e69e6
36 Base36 csn8u

Cryptographic Hash Functions

md5 3732d0a65329ccda9d9ed5f2f76ce338
sha1 902d07726090bf28f5e86f7468155e31f111b76c
sha256 c85fb6390b43869b6f6493b2f475a00cc38cad58e1edaf07213eea31adf7c80b
sha512 84a2e625bd8cf370f97ad54b82b9f3cd21806ca27ab11535b7e74add4770818d5f396baa72cb5c71e55ac42a8897f56a555aa4f7ae44bdc432a3f62d32227dd2
ripemd-160 a6976e6119475e5122d4a68dae0138e2e9432154

21491886 as geometric shapes

Circle

Radius = n
Diameter 42983772
Circumference 135037502.33878
Area 1.4511053029949E+15

Sphere

Radius = n
Volume 4.1582652994615E+22
Surface area 5.8044212119795E+15
Circumference 135037502.33878

Square

Length = n
Perimeter 85967544
Area 461901163836996
Diagonal 30394116.662176

Cube

Length = n
Surface area 2771406983021976
Volume 9.927127156452E+21
Space diagonal 37225038.502478

Equilateral Triangle

Length = n
Perimeter 64475658
Area 2.0000907096022E+14
Altitude 18612519.251239

Triangular Pyramid

Length = n
Surface area 2.0000907096022E+14
Volume 1.1699231550047E+21
Height 10131372.220725