21686788 (number)

21686788 is an even 8-digits composite number following 21686787 and preceding 21686789. In scientific notation, it is written as 2.1686788 × 10^7. The sum of its digits is 46. It has a total of 4 prime factors and 12 positive divisors. There are 10760360 positive integers (up to 21686788) that are relatively prime to 21686788.

Interesting facts

Basic properties

Name

Name twenty-one million six hundred eighty-six thousand seven hundred eighty-eight

Notation

Scientific notation 2.1686788 × 10^7
Engineering notation 2.1686788 × 10^6

Prime Factorization of 21686788

Prime Factorization 2 × 2 × 131 × 41387

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10843394
Product of the distinct prime numbers

The prime factorization of 21686788 is 2 × 2 × 131 × 41387. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 8, 69, 45, 414, 171, 1204, 3619, 86948, 24552, 181279, 751279, 1071285, 9822816, 17211407, 76979344, 306309587, 463266809, 3654610649, 5444215188

Basic calculations (n = 21686788)

Multiplication

n×y
n×2 43373576
n×3 65060364
n×4 86747152
n×5 108433940

Division

n÷y
n÷2 10843394
n÷3 7228929.3333333
n÷3 5421697
n÷5 4337357.6

Exponentiation

ny
n2 470316773756944
n3 1.0199660165311E+22
n4 2.2119786767714E+29
n5 4.7970712623662E+36

Nth Root

y√n
2√n 4656.9075575966
3√n 278.86782620981
4√n 68.241538358954
5√n 29.325069280181

Divisors of 21686788

1, 2, 4, 131, 262, 524, 41387, 82774, 165548, 5421697, 10843394, 21686788

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 -21686787
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 21686788 can be divided by 12 positive divisors. The sum of these divisors (counting 21686788) is 1, the average is 0.083333333333333.

Base conversion 21686788

Base System Value
2 Binary 1010010101110101000000100
3 Ternary 1111210210200101
4 Quaternary 1102232220010
5 Quinary 21022434123
6 Senary 2052453444
8 Octal 122565004
10 Decimal 21686788
12 Duodecimal 731a284
16 Hexadecimal 14aea04
20 Vigesimal 6fagj8
36 Base36 cwtms

Cryptographic Hash Functions

md5 44c49740b28022ce4b38c4d43cf83464
sha1 a9429484dcec2c20a161821e66fa4757ade8f9a7
sha256 f31fbf163469d3d8c27e76bb3386d2626f64c33e641142ef75bd0b284daa12f6
sha512 b772ebc44d82c9e4cf77e452c4609378d510df8a300ab729382fca9e50172541d6ef6b281d17a7ed310940335b07a5f7446b2312cbcdaa195d10ad9e0c3ce5e7
ripemd-160 a109e95b51ac9abe70cf78e20ea1d4689665818d

21686788 as geometric shapes

Circle

Radius = n
Diameter 43373576
Circumference 136262107.72152
Area 1.4775437212949E+15

Sphere

Radius = n
Volume 4.2724236592604E+22
Surface area 5.9101748851795E+15
Circumference 136262107.72152

Square

Length = n
Perimeter 86747152
Area 470316773756944
Diagonal 30669749.71391

Cube

Length = n
Surface area 2821900642541664
Volume 1.0199660165311E+22
Space diagonal 37562618.668975

Equilateral Triangle

Length = n
Perimeter 65060364
Area 2.0365313694973E+14
Altitude 18781309.334488

Triangular Pyramid

Length = n
Surface area 2.0365313694973E+14
Volume 1.2020414781149E+21
Height 10223249.904637