21685939 (number)

21685939 is an odd 8-digits composite number following 21685938 and preceding 21685940. In scientific notation, it is written as 2.1685939 × 10^7. The sum of its digits is 43. It has a total of 4 prime factors and 16 positive divisors. There are 18869760 positive integers (up to 21685939) that are relatively prime to 21685939.

Interesting facts

Basic properties

Name

Name twenty-one million six hundred eighty-five thousand nine hundred thirty-nine

Notation

Scientific notation 2.1685939 × 10^7
Engineering notation 2.1685939 × 10^6

Prime Factorization of 21685939

Prime Factorization 29 × 11 × 157 × 433

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21685939
Product of the distinct prime numbers

The prime factorization of 21685939 is 29 × 11 × 157 × 433. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 2, 1, 42, 378, 626, 6701, 5510, 50755, 67955, 178839, 518473, 1649905, 3475518, 41206912, 36526257, 599353102, 820609725, 2504371443, 4311788623

Basic calculations (n = 21685939)

Multiplication

n×y
n×2 43371878
n×3 65057817
n×4 86743756
n×5 108429695

Division

n÷y
n÷2 10842969.5
n÷3 7228646.3333333
n÷3 5421484.75
n÷5 4337187.8

Exponentiation

ny
n2 470279950311721
n3 1.0198462315383E+22
n4 2.2116323166519E+29
n5 4.7961323509343E+36

Nth Root

y√n
2√n 4656.8164017921
3√n 278.864187099
4√n 68.240870464789
5√n 29.324839671502

Divisors of 21685939

1, 11, 29, 157, 319, 433, 1727, 4553, 4763, 12557, 50083, 67981, 138127, 747791, 1971449, 21685939

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 -21685938
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 21685939 can be divided by 16 positive divisors. The sum of these divisors (counting 21685939) is 1, the average is 0.0625.

Base conversion 21685939

Base System Value
2 Binary 1010010101110011010110011
3 Ternary 1111210202111221
4 Quaternary 1102232122303
5 Quinary 21022422224
6 Senary 2052445511
8 Octal 122563263
10 Decimal 21685939
12 Duodecimal 7319897
16 Hexadecimal 14ae6b3
20 Vigesimal 6faegj
36 Base36 cwsz7

Cryptographic Hash Functions

md5 cd1f4a128cccc808f684aaf4aba96153
sha1 fd610e66d8ebf1d28618cc3582dd8f01e2fe5e6a
sha256 96fbc58dcb3e1f14bbc82faf31fdaec4ffd24ed4f2c85151e7ad67557514afe4
sha512 232c3e92a57d0c656e8d6db57ce063841e9c7f05f558ea9d547a8c77db044f0c2576fe4731477cd9e8791ebc774f568de749bcb25b88be10b208277571e953a4
ripemd-160 a9b5e4aa8420730bb89042f7d657acc806533538

21685939 as geometric shapes

Circle

Radius = n
Diameter 43371878
Circumference 136256773.29719
Area 1.4774280370299E+15

Sphere

Radius = n
Volume 4.2719219050559E+22
Surface area 5.9097121481195E+15
Circumference 136256773.29719

Square

Length = n
Perimeter 86743756
Area 470279950311721
Diagonal 30668549.046596

Cube

Length = n
Surface area 2821679701870326
Volume 1.0198462315383E+22
Space diagonal 37561148.157839

Equilateral Triangle

Length = n
Perimeter 65057817
Area 2.0363719193022E+14
Altitude 18780574.07892

Triangular Pyramid

Length = n
Surface area 2.0363719193022E+14
Volume 1.2019003101471E+21
Height 10222849.682199