21491490 (number)

21491490 is an even 8-digits composite number following 21491489 and preceding 21491491. In scientific notation, it is written as 2.1491490 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 5731056 positive integers (up to 21491490) that are relatively prime to 21491490.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491490 × 10^7
Engineering notation 2.1491490 × 10^6

Prime Factorization of 21491490

Prime Factorization 2 × 3 × 5 × 716383

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21491490
Product of the distinct prime numbers

The prime factorization of 21491490 is 2 × 3 × 5 × 716383. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 2, 23, 67, 843, 443, 9279, 7617, 61916, 822, 965591, 775673, 5782238, 1031554, 54979681, 12595529, 490232028, 767282808, 7748781055, 9911869237

Basic calculations (n = 21491490)

Multiplication

n×y
n×2 42982980
n×3 64474470
n×4 85965960
n×5 107457450

Division

n÷y
n÷2 10745745
n÷3 7163830
n÷3 5372872.5
n÷5 4298298

Exponentiation

ny
n2 461884142420100
n3 9.9265784279802E+21
n4 2.1333696101915E+29
n5 4.5849291643735E+36

Nth Root

y√n
2√n 4635.8915000246
3√n 278.02819616362
4√n 68.087381356787
5√n 29.272061249996

Divisors of 21491490

1, 2, 3, 5, 6, 10, 15, 30, 716383, 1432766, 2149149, 3581915, 4298298, 7163830, 10745745, 21491490

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 -21491489
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 21491490 can be divided by 16 positive divisors. The sum of these divisors (counting 21491490) is 1, the average is 0.0625.

Base conversion 21491490

Base System Value
2 Binary 1010001111110111100100010
3 Ternary 1111102212210010
4 Quaternary 1101332330202
5 Quinary 21000211430
6 Senary 2044345350
8 Octal 121767442
10 Decimal 21491490
12 Duodecimal 7245256
16 Hexadecimal 147ef22
20 Vigesimal 6e68ea
36 Base36 csmxu

Cryptographic Hash Functions

md5 767af495af6ad2d9db6195d71a658fd7
sha1 568e4052579dc145542e12ef2e29ebe6b01a4b3a
sha256 fe2f21c4ef15f6055c4f0019e160e29492d69393a2548b6388fac34d1b8d0735
sha512 b830d26f6c33f70e0b74fbbab60315b42eef09414f3081aa05054eed2cab1e2644a6f36bd09b26006ddfe941c08e1a6824d0fa33b9b7ac493e8550f1720cde36
ripemd-160 ae76d4e4fc3f2ac80ebcc7e27fb3a4b9e11d2214

21491490 as geometric shapes

Circle

Radius = n
Diameter 42982980
Circumference 135035014.1974
Area 1.4510518286366E+15

Sphere

Radius = n
Volume 4.1580354486167E+22
Surface area 5.8042073145464E+15
Circumference 135035014.1974

Square

Length = n
Perimeter 85965960
Area 461884142420100
Diagonal 30393556.633606

Cube

Length = n
Surface area 2771304854520600
Volume 9.9265784279802E+21
Space diagonal 37224352.610358

Equilateral Triangle

Length = n
Perimeter 64474470
Area 2.000017004705E+14
Altitude 18612176.305179

Triangular Pyramid

Length = n
Surface area 2.000017004705E+14
Volume 1.1698584867341E+21
Height 10131185.544535