21095905 (number)

21095905 is an odd 8-digits composite number following 21095904 and preceding 21095906. In scientific notation, it is written as 2.1095905 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 16063488 positive integers (up to 21095905) that are relatively prime to 21095905.

Interesting facts

Basic properties

Name

Name twenty-one million ninety-five thousand nine hundred five

Notation

Scientific notation 2.1095905 × 10^7
Engineering notation 2.1095905 × 10^6

Prime Factorization of 21095905

Prime Factorization 5 × 29 × 73 × 1993

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21095905
Product of the distinct prime numbers

The prime factorization of 21095905 is 5 × 29 × 73 × 1993. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 8, 61, 2, 307, 608, 7169, 5317, 90366, 15310, 347321, 351842, 862888, 9905000, 74419861, 45695838, 636825272, 367815002, 7544018474, 1277961119

Basic calculations (n = 21095905)

Multiplication

n×y
n×2 42191810
n×3 63287715
n×4 84383620
n×5 105479525

Division

n÷y
n÷2 10547952.5
n÷3 7031968.3333333
n÷3 5273976.25
n÷5 4219181

Exponentiation

ny
n2 445037207769025
n3 9.3884626565606E+21
n4 1.9805811629885E+29
n5 4.1782152059195E+36

Nth Root

y√n
2√n 4593.027868411
3√n 276.31177136696
4√n 67.771881104268
5√n 29.163499223778

Divisors of 21095905

1, 5, 29, 73, 145, 365, 1993, 2117, 9965, 10585, 57797, 145489, 288985, 727445, 4219181, 21095905

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 -21095904
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 21095905 can be divided by 16 positive divisors. The sum of these divisors (counting 21095905) is 1, the average is 0.0625.

Base conversion 21095905

Base System Value
2 Binary 1010000011110010111100001
3 Ternary 1110200210010211
4 Quaternary 1100132113201
5 Quinary 20400032110
6 Senary 2032054121
8 Octal 120362741
10 Decimal 21095905
12 Duodecimal 7094341
16 Hexadecimal 141e5e1
20 Vigesimal 6bgjf5
36 Base36 ck5pd

Cryptographic Hash Functions

md5 3a82616a8341efb2d513503f95dede54
sha1 fd0bca5ce166f935a9917295f2fa23967daa0faa
sha256 c3830dbaf6b233ca54b9f5462c34c329b710b4aad5119bb816267704b51e2c69
sha512 3853576276fadffcb7a879496e20299fd2b6928ddfae5e7c01c7c3f6729c2a4740854d8d92c34925004b7f1d0c0c693db7f5d11b919be66becbf448bf90e709f
ripemd-160 3c7103545bbf2e6aac8fa0311b1de130487f9ab4

21095905 as geometric shapes

Circle

Radius = n
Diameter 42191810
Circumference 132549480.33766
Area 1.3981256225013E+15

Sphere

Radius = n
Volume 3.9326300413804E+22
Surface area 5.5925024900051E+15
Circumference 132549480.33766

Square

Length = n
Perimeter 84383620
Area 445037207769025
Diagonal 29834114.961534

Cube

Length = n
Surface area 2670223246614150
Volume 9.3884626565606E+21
Space diagonal 36539179.291646

Equilateral Triangle

Length = n
Perimeter 63287715
Area 1.9270676377863E+14
Altitude 18269589.645823

Triangular Pyramid

Length = n
Surface area 1.9270676377863E+14
Volume 1.1064409348951E+21
Height 9944704.9871781