20686945 (number)

20686945 is an odd 8-digits composite number following 20686944 and preceding 20686946. In scientific notation, it is written as 2.0686945 × 10^7. The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors. There are 16549552 positive integers (up to 20686945) that are relatively prime to 20686945.

Interesting facts

Basic properties

Name

Name twenty million six hundred eighty-six thousand nine hundred forty-five

Notation

Scientific notation 2.0686945 × 10^7
Engineering notation 2.0686945 × 10^6

Prime Factorization of 20686945

Prime Factorization 5 × 4137389

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 20686945
Product of the distinct prime numbers

The prime factorization of 20686945 is 5 × 4137389. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 9, 28, 42, 235, 625, 1847, 8190, 34946, 51362, 922712, 167440, 2394131, 4915638, 49071689, 54626832, 785857892, 73173019, 290197125, 7149252151

Basic calculations (n = 20686945)

Multiplication

n×y
n×2 41373890
n×3 62060835
n×4 82747780
n×5 103434725

Division

n÷y
n÷2 10343472.5
n÷3 6895648.3333333
n÷3 5171736.25
n÷5 4137389

Exponentiation

ny
n2 427949693433025
n3 8.8529717708158E+21
n4 1.8314094010942E+29
n5 3.7886265552919E+36

Nth Root

y√n
2√n 4548.2903381381
3√n 274.51460379746
4√n 67.441013768612
5√n 29.049540818747

Divisors of 20686945

1, 5, 4137389, 20686945

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 -20686944
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 20686945 can be divided by 4 positive divisors. The sum of these divisors (counting 20686945) is 1, the average is 0.25.

Base conversion 20686945

Base System Value
2 Binary 1001110111010100001100001
3 Ternary 1102221000011011
4 Quaternary 1032322201201
5 Quinary 20243440240
6 Senary 2015220521
8 Octal 116724141
10 Decimal 20686945
12 Duodecimal 6b17741
16 Hexadecimal 13ba861
20 Vigesimal 695h75
36 Base36 cbe5d

Cryptographic Hash Functions

md5 3dda5b142b97aa537d90ca6f8c25c278
sha1 1b51b4c9accf543e542457f8b9ad3a28a90b44af
sha256 437911f0e341d06e96cc7bb2354e1459199e5fb8bbd5d609a6bd7156d1286556
sha512 79eb8e64c397dab6e5566080d30d10e2d7af2819d085578520264078b6d0cafbb3195e6ad507c1346a92649a4daa22c281b43380cad839e00c99af12a13c5eeb
ripemd-160 d716b57a5b2ef51334f9f2192ab613753f6fd428

20686945 as geometric shapes

Circle

Radius = n
Diameter 41373890
Circumference 129979908.87443
Area 1.3444436129952E+15

Sphere

Radius = n
Volume 3.7083241436844E+22
Surface area 5.3777744519808E+15
Circumference 129979908.87443

Square

Length = n
Perimeter 82747780
Area 427949693433025
Diagonal 29255758.183066

Cube

Length = n
Surface area 2567698160598150
Volume 8.8529717708158E+21
Space diagonal 35830839.793383

Equilateral Triangle

Length = n
Perimeter 62060835
Area 1.8530765302738E+14
Altitude 17915419.896691

Triangular Pyramid

Length = n
Surface area 1.8530765302738E+14
Volume 1.0433327287995E+21
Height 9751919.3943554