21385965 (number)

21385965 is an odd 8-digits composite number following 21385964 and preceding 21385966. In scientific notation, it is written as 2.1385965 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 11361600 positive integers (up to 21385965) that are relatively prime to 21385965.

Interesting facts

Basic properties

Name

Name twenty-one million three hundred eighty-five thousand nine hundred sixty-five

Notation

Scientific notation 2.1385965 × 10^7
Engineering notation 2.1385965 × 10^6

Prime Factorization of 21385965

Prime Factorization 3 × 5 × 271 × 5261

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21385965
Product of the distinct prime numbers

The prime factorization of 21385965 is 3 × 5 × 271 × 5261. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 8, 40, 9, 91, 466, 1040, 7636, 88568, 27900, 62985, 342081, 6846177, 7710303, 93038201, 88906534, 94187700, 31804367, 3898642375, 417414341

Basic calculations (n = 21385965)

Multiplication

n×y
n×2 42771930
n×3 64157895
n×4 85543860
n×5 106929825

Division

n÷y
n÷2 10692982.5
n÷3 7128655
n÷3 5346491.25
n÷5 4277193

Exponentiation

ny
n2 457359498981225
n3 9.78107423763E+21
n4 2.0917771130836E+29
n5 4.4734672128206E+36

Nth Root

y√n
2√n 4624.4961887756
3√n 277.57240217771
4√n 68.003648349008
5√n 29.243258975537

Divisors of 21385965

1, 3, 5, 15, 271, 813, 1355, 4065, 5261, 15783, 26305, 78915, 1425731, 4277193, 7128655, 21385965

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 -21385964
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 21385965 can be divided by 16 positive divisors. The sum of these divisors (counting 21385965) is 1, the average is 0.0625.

Base conversion 21385965

Base System Value
2 Binary 1010001100101001011101101
3 Ternary 1111020112000210
4 Quaternary 1101211023231
5 Quinary 20433322330
6 Senary 2042213033
8 Octal 121451355
10 Decimal 21385965
12 Duodecimal 71b4179
16 Hexadecimal 14652ed
20 Vigesimal 6dd4i5
36 Base36 cqdil

Cryptographic Hash Functions

md5 5a3f91d6c4c75c169296d445df89887c
sha1 23a1d4d3e7f73dc8e5bb44df565d15856a2da3e9
sha256 2d1c224c5036e3781cf9e212f6e31e5a77ee727b7696b1d40c236a87c2d44cc5
sha512 1e9e704f02722ff5024e0ca25c0fdb7099265a66d609188585c3f671ca37c5c2ef0640804bb0085fc9d1e4d248a0e39d71d310d1a9df2a5e248e96b7092d9c40
ripemd-160 31b8d776d71db5462280c91cc0268838e3ac46cb

21385965 as geometric shapes

Circle

Radius = n
Diameter 42771930
Circumference 134371981.06786
Area 1.4368372420489E+15

Sphere

Radius = n
Volume 4.0970867958873E+22
Surface area 5.7473489681957E+15
Circumference 134371981.06786

Square

Length = n
Perimeter 85543860
Area 457359498981225
Diagonal 30244321.747436

Cube

Length = n
Surface area 2744156993887350
Volume 9.78107423763E+21
Space diagonal 37041577.94889

Equilateral Triangle

Length = n
Perimeter 64157895
Area 1.9804247238993E+14
Altitude 18520788.974445

Triangular Pyramid

Length = n
Surface area 1.9804247238993E+14
Volume 1.1527106534529E+21
Height 10081440.582479