21487445 (number)

21487445 is an odd 8-digits composite number following 21487444 and preceding 21487446. In scientific notation, it is written as 2.1487445 × 10^7. The sum of its digits is 35. It has a total of 4 prime factors and 16 positive divisors. There are 14696640 positive integers (up to 21487445) that are relatively prime to 21487445.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred eighty-seven thousand four hundred forty-five

Notation

Scientific notation 2.1487445 × 10^7
Engineering notation 2.1487445 × 10^6

Prime Factorization of 21487445

Prime Factorization 7 × 5 × 811 × 757

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21487445
Product of the distinct prime numbers

The prime factorization of 21487445 is 7 × 5 × 811 × 757. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 1, 92, 11, 798, 907, 9391, 6239, 2149, 7579, 336235, 742523, 6286388, 7425417, 20755956, 54146397, 640618133, 712621105, 1675220927, 1525716925

Basic calculations (n = 21487445)

Multiplication

n×y
n×2 42974890
n×3 64462335
n×4 85949780
n×5 107437225

Division

n÷y
n÷2 10743722.5
n÷3 7162481.6666667
n÷3 5371861.25
n÷5 4297489

Exponentiation

ny
n2 461710292628025
n3 9.9209745187786E+21
n4 2.1317639431866E+29
n5 4.5806160482204E+36

Nth Root

y√n
2√n 4635.4552095776
3√n 278.01075213318
4√n 68.084177380487
5√n 29.270959284493

Divisors of 21487445

1, 5, 7, 35, 757, 811, 3785, 4055, 5299, 5677, 26495, 28385, 613927, 3069635, 4297489, 21487445

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 -21487444
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 21487445 can be divided by 16 positive divisors. The sum of these divisors (counting 21487445) is 1, the average is 0.0625.

Base conversion 21487445

Base System Value
2 Binary 1010001111101111101010101
3 Ternary 1111102200020022
4 Quaternary 1101331331111
5 Quinary 21000044240
6 Senary 2044314525
8 Octal 121757525
10 Decimal 21487445
12 Duodecimal 7242a45
16 Hexadecimal 147df55
20 Vigesimal 6e5ic5
36 Base36 csjth

Cryptographic Hash Functions

md5 430629c8e9f374ff644a6a56e36ff0ff
sha1 9ba6933a9dd9fdbc119686e4c69e2b896ca81fa1
sha256 1688052b9d7ca59e9e5bc54186ccaca1a22543cb689948b125756399d8e857d9
sha512 bb51f97029ba0fcebd92a6a25039281a33ed7f659c096430139af112bb71f1828ab3c7a8a56981e83f10f9fd8f980f792074141e6d00a2c52cf3a80fddea1f95
ripemd-160 7d697294df64f249f21ee8f9434f047fe41879b8

21487445 as geometric shapes

Circle

Radius = n
Diameter 42974890
Circumference 135009598.71283
Area 1.450505663407E+15

Sphere

Radius = n
Volume 4.1556880886195E+22
Surface area 5.802022653628E+15
Circumference 135009598.71283

Square

Length = n
Perimeter 85949780
Area 461710292628025
Diagonal 30387836.139746

Cube

Length = n
Surface area 2770261755768150
Volume 9.9209745187786E+21
Space diagonal 37217346.464842

Equilateral Triangle

Length = n
Perimeter 64462335
Area 1.9992642130231E+14
Altitude 18608673.232421

Triangular Pyramid

Length = n
Surface area 1.9992642130231E+14
Volume 1.1691980597012E+21
Height 10129278.713249