21487897 (number)

21487897 is an odd 8-digits composite number following 21487896 and preceding 21487898. In scientific notation, it is written as 2.1487897 × 10^7. The sum of its digits is 46. It has a total of 2 prime factors and 4 positive divisors. There are 21476736 positive integers (up to 21487897) that are relatively prime to 21487897.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1487897 × 10^7
Engineering notation 2.1487897 × 10^6

Prime Factorization of 21487897

Prime Factorization 2473 × 8689

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21487897
Product of the distinct prime numbers

The prime factorization of 21487897 is 2473 × 8689. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 2, 58, 66, 782, 198, 4301, 5591, 80890, 33173, 651465, 703050, 1665998, 9265528, 74353162, 18047242, 53228908, 632057310, 7643173357, 2749011876

Basic calculations (n = 21487897)

Multiplication

n×y
n×2 42975794
n×3 64463691
n×4 85951588
n×5 107439485

Division

n÷y
n÷2 10743948.5
n÷3 7162632.3333333
n÷3 5371974.25
n÷5 4297579.4

Exponentiation

ny
n2 461729717482609
n3 9.9216006111054E+21
n4 2.1319433200657E+29
n5 4.581097847141E+36

Nth Root

y√n
2√n 4635.503963972
3√n 278.01270148824
4√n 68.084535424515
5√n 29.271082429541

Divisors of 21487897

1, 2473, 8689, 21487897

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21487896
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21487897 can be divided by 4 positive divisors. The sum of these divisors (counting 21487897) is 1, the average is 0.25.

Base conversion 21487897

Base System Value
2 Binary 1010001111110000100011001
3 Ternary 1111102200212001
4 Quaternary 1101332010121
5 Quinary 21000103042
6 Senary 2044321001
8 Octal 121760431
10 Decimal 21487897
12 Duodecimal 7243161
16 Hexadecimal 147e119
20 Vigesimal 6e5jeh
36 Base36 csk61

Cryptographic Hash Functions

md5 2b8554fb4dbce3dbcbfb9f96432cb1be
sha1 12b557e185cdcba1a33e50846d60089eae89eb88
sha256 2b3825a33cd23b8c05b34c6cefd17ed575a6aca9fab49e9af9123ea7b8b7d4cb
sha512 46364a4b107671f0744d2832cca3c6e61ca4d98b18e2e8193c6fa0db276c7bd30ffc8d0e58bb5422f8d8a013677b0f992b71b73fb27951ca791432f1e5eb1898
ripemd-160 f9ad40fae34e480de9ef2d0ee12b52ca7b4fc179

21487897 as geometric shapes

Circle

Radius = n
Diameter 42975794
Circumference 135012438.71259
Area 1.4505666883875E+15

Sphere

Radius = n
Volume 4.1559503455601E+22
Surface area 5.8022667535498E+15
Circumference 135012438.71259

Square

Length = n
Perimeter 85951588
Area 461729717482609
Diagonal 30388475.364276

Cube

Length = n
Surface area 2770378304895654
Volume 9.9216006111054E+21
Space diagonal 37218129.351807

Equilateral Triangle

Length = n
Perimeter 64463691
Area 1.9993483251108E+14
Altitude 18609064.675903

Triangular Pyramid

Length = n
Surface area 1.9993483251108E+14
Volume 1.1692718453895E+21
Height 10129491.788092