21491145 (number)

21491145 is an odd 8-digits composite number following 21491144 and preceding 21491146. In scientific notation, it is written as 2.1491145 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors. There are 9953280 positive integers (up to 21491145) that are relatively prime to 21491145.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491145 × 10^7
Engineering notation 2.1491145 × 10^6

Prime Factorization of 21491145

Prime Factorization 117 × 5 × 17 × 2161

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21491145
Product of the distinct prime numbers

The prime factorization of 21491145 is 117 × 5 × 17 × 2161. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 1, 90, 99, 539, 82, 8174, 9489, 34141, 26604, 239994, 580895, 4834070, 8881369, 29054853, 49503197, 953547511, 618171726, 614556346, 7641531975

Basic calculations (n = 21491145)

Multiplication

n×y
n×2 42982290
n×3 64473435
n×4 85964580
n×5 107455725

Division

n÷y
n÷2 10745572.5
n÷3 7163715
n÷3 5372786.25
n÷5 4298229

Exponentiation

ny
n2 461869313411025
n3 9.9261003855668E+21
n4 2.1332326267077E+29
n5 4.5845611699306E+36

Nth Root

y√n
2√n 4635.8542902037
3√n 278.02670843924
4√n 68.087108105747
5√n 29.2719672693

Divisors of 21491145

1, 5, 17, 85, 117, 585, 1989, 2161, 9945, 10805, 36737, 183685, 252837, 1264185, 4298229, 21491145

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 -21491144
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 21491145 can be divided by 16 positive divisors. The sum of these divisors (counting 21491145) is 1, the average is 0.0625.

Base conversion 21491145

Base System Value
2 Binary 1010001111110110111001001
3 Ternary 1111102212022100
4 Quaternary 1101332313021
5 Quinary 21000204040
6 Senary 2044344013
8 Octal 121766711
10 Decimal 21491145
12 Duodecimal 7245009
16 Hexadecimal 147edc9
20 Vigesimal 6e67h5
36 Base36 csmo9

Cryptographic Hash Functions

md5 081e620513057cf272dafeda5fb8e7f7
sha1 88433c66c6dea91c57c42d6ce3b3c0f55ddcc680
sha256 e8b193b5e5ca5213089ce151eb3b7a312331e416439e5091f95ce2559503fd56
sha512 ded592598a1bce1ac515f83463152cb68e5f9e62762bf24429fa916fcf23dc1fa479f5f21d84c6865d77a2a3f2c5b012c27cbaa3c56baa7df98c53c6ee328db2
ripemd-160 4bf917e43e75dbf9821094afe43d3ac63ebbe1a6

21491145 as geometric shapes

Circle

Radius = n
Diameter 42982290
Circumference 135032846.49847
Area 1.4510052419306E+15

Sphere

Radius = n
Volume 4.1578352066789E+22
Surface area 5.8040209677226E+15
Circumference 135032846.49847

Square

Length = n
Perimeter 85964580
Area 461869313411025
Diagonal 30393068.729927

Cube

Length = n
Surface area 2771215880466150
Volume 9.9261003855668E+21
Space diagonal 37223755.05283

Equilateral Triangle

Length = n
Perimeter 64473435
Area 1.9999527932121E+14
Altitude 18611877.526415

Triangular Pyramid

Length = n
Surface area 1.9999527932121E+14
Volume 1.1698021488954E+21
Height 10131022.909976