21439905 (number)

21439905 is an odd 8-digits composite number following 21439904 and preceding 21439906. In scientific notation, it is written as 2.1439905 × 10^7. The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors. There are 11415488 positive integers (up to 21439905) that are relatively prime to 21439905.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred thirty-nine thousand nine hundred five

Notation

Scientific notation 2.1439905 × 10^7
Engineering notation 2.1439905 × 10^6

Prime Factorization of 21439905

Prime Factorization 3 × 5 × 1229 × 1163

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21439905
Product of the distinct prime numbers

The prime factorization of 21439905 is 3 × 5 × 1229 × 1163. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 4, 1, 33, 874, 433, 9220, 6561, 7664, 90676, 721281, 89867, 8787131, 7780079, 82687175, 62823484, 513771034, 92593788, 9474260230, 9236087045

Basic calculations (n = 21439905)

Multiplication

n×y
n×2 42879810
n×3 64319715
n×4 85759620
n×5 107199525

Division

n÷y
n÷2 10719952.5
n÷3 7146635
n÷3 5359976.25
n÷5 4287981

Exponentiation

ny
n2 459669526409025
n3 9.8552709776045E+21
n4 2.112960735091E+29
n5 4.5301677429081E+36

Nth Root

y√n
2√n 4630.3245026672
3√n 277.80557200402
4√n 68.046487805523
5√n 29.2579956722

Divisors of 21439905

1, 3, 5, 15, 1163, 1229, 3489, 3687, 5815, 6145, 17445, 18435, 1429327, 4287981, 7146635, 21439905

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 -21439904
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 21439905 can be divided by 16 positive divisors. The sum of these divisors (counting 21439905) is 1, the average is 0.0625.

Base conversion 21439905

Base System Value
2 Binary 1010001110010010110100001
3 Ternary 1111100021000120
4 Quaternary 1101302112201
5 Quinary 20442034110
6 Senary 2043310453
8 Octal 121622641
10 Decimal 21439905
12 Duodecimal 721b429
16 Hexadecimal 14725a1
20 Vigesimal 6djjf5
36 Base36 crj4x

Cryptographic Hash Functions

md5 f8d42c35eb14d2f6a4418071a8be116c
sha1 b440eecba2f7e41ea4a4de11d5c9c224a7c35b16
sha256 d459cb901c5055eab0e0038c724c40987f713b7d0c468028051eb0fd6ae3bb54
sha512 ee459b9effddf7663847ea9222794be823dd868c471effc6a597bcfe258b21ac1394dcfcc4d7a3a1d962e84169c08b86725c16bbbbdfe07a5dd72384f987685f
ripemd-160 d3d4ec7e1f9f707e1b50a6f718bd85ce718a2d4a

21439905 as geometric shapes

Circle

Radius = n
Diameter 42879810
Circumference 134710896.08333
Area 1.4440944072457E+15

Sphere

Radius = n
Volume 4.1281662536505E+22
Surface area 5.7763776289828E+15
Circumference 134710896.08333

Square

Length = n
Perimeter 85759620
Area 459669526409025
Diagonal 30320604.426991

Cube

Length = n
Surface area 2758017158454150
Volume 9.8552709776045E+21
Space diagonal 37135004.76945

Equilateral Triangle

Length = n
Perimeter 64319715
Area 1.9904274360789E+14
Altitude 18567502.384725

Triangular Pyramid

Length = n
Surface area 1.9904274360789E+14
Volume 1.1614548231159E+21
Height 10106868.14233