20407981 (number)

20407981 is an odd 8-digits composite number following 20407980 and preceding 20407982. In scientific notation, it is written as 2.0407981 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 12 positive divisors. There are 18446120 positive integers (up to 20407981) that are relatively prime to 20407981.

Interesting facts

Basic properties

Name

Name twenty million four hundred seven thousand nine hundred eighty-one

Notation

Scientific notation 2.0407981 × 10^7
Engineering notation 2.0407981 × 10^6

Prime Factorization of 20407981

Prime Factorization 11 × 11 × 227 × 743

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 1855271
Product of the distinct prime numbers

The prime factorization of 20407981 is 11 × 11 × 227 × 743. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 2, 27, 64, 516, 124, 4973, 1346, 78905, 97834, 722198, 345037, 6226516, 3446447, 4712302, 92439729, 986680568, 653445739, 4767023400, 1482217358

Basic calculations (n = 20407981)

Multiplication

n×y
n×2 40815962
n×3 61223943
n×4 81631924
n×5 102039905

Division

n÷y
n÷2 10203990.5
n÷3 6802660.3333333
n÷3 5101995.25
n÷5 4081596.2

Exponentiation

ny
n2 416485688496361
n3 8.4996320176057E+21
n4 1.7346032872229E+29
n5 3.5399750928182E+36

Nth Root

y√n
2√n 4517.5193414085
3√n 273.27506970847
4√n 67.212493938319
5√n 28.970767998446

Divisors of 20407981

1, 11, 121, 227, 743, 2497, 8173, 27467, 89903, 168661, 1855271, 20407981

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20407980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20407981 can be divided by 12 positive divisors. The sum of these divisors (counting 20407981) is 1, the average is 0.083333333333333.

Base conversion 20407981

Base System Value
2 Binary 1001101110110011010101101
3 Ternary 1102101211111011
4 Quaternary 1031312122231
5 Quinary 20211023411
6 Senary 2005225221
8 Octal 115663255
10 Decimal 20407981
12 Duodecimal 6a02211
16 Hexadecimal 13766ad
20 Vigesimal 67ajj1
36 Base36 c5ewd

Cryptographic Hash Functions

md5 59170eba9ce8aae45e769d5a345ab2e2
sha1 d11169a6127704b71d45d1e0fbefa13027850d39
sha256 697f5f909272901783812ed5f043513df03eccbe95cb8322f1a982f6cdef62f8
sha512 fcf61741c88cb7d46ee4404b01aca9a5e0e539786c8b5c81ca2e635e0c265da3cb5bf2d015f770819bbe3e20ef7a645d9ba88c72e8114b52823a4cdb93041fd7
ripemd-160 b34465e1b350c3292e687d9faff68675007e0dcf

20407981 as geometric shapes

Circle

Radius = n
Diameter 40815962
Circumference 128227126.3684
Area 1.3084283793055E+15

Sphere

Radius = n
Volume 3.5603175339635E+22
Surface area 5.2337135172218E+15
Circumference 128227126.3684

Square

Length = n
Perimeter 81631924
Area 416485688496361
Diagonal 28861243.510852

Cube

Length = n
Surface area 2498914130978166
Volume 8.4996320176057E+21
Space diagonal 35347659.9719

Equilateral Triangle

Length = n
Perimeter 61223943
Area 1.8034359327525E+14
Altitude 17673829.98595

Triangular Pyramid

Length = n
Surface area 1.8034359327525E+14
Volume 1.0016912395399E+21
Height 9620414.5036175