21028305 (number)

21028305 is an odd 8-digits composite number following 21028304 and preceding 21028306. In scientific notation, it is written as 2.1028305 × 10^7. The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors. There are 11194368 positive integers (up to 21028305) that are relatively prime to 21028305.

Interesting facts

Basic properties

Name

Name twenty-one million twenty-eight thousand three hundred five

Notation

Scientific notation 2.1028305 × 10^7
Engineering notation 2.1028305 × 10^6

Prime Factorization of 21028305

Prime Factorization 3 × 5 × 1823 × 769

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21028305
Product of the distinct prime numbers

The prime factorization of 21028305 is 3 × 5 × 1823 × 769. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 10, 69, 56, 994, 800, 1965, 811, 91728, 39591, 27383, 891114, 4316143, 6535044, 71390369, 92177954, 102634059, 19481644, 1736997807, 4740250885

Basic calculations (n = 21028305)

Multiplication

n×y
n×2 42056610
n×3 63084915
n×4 84113220
n×5 105141525

Division

n÷y
n÷2 10514152.5
n÷3 7009435
n÷3 5257076.25
n÷5 4205661

Exponentiation

ny
n2 442189611173025
n3 9.2984980115778E+21
n4 1.9553165222935E+29
n5 4.1116992202327E+36

Nth Root

y√n
2√n 4585.6629836917
3√n 276.01631651071
4√n 67.717523461004
5√n 29.144784839574

Divisors of 21028305

1, 3, 5, 15, 769, 1823, 2307, 3845, 5469, 9115, 11535, 27345, 1401887, 4205661, 7009435, 21028305

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 -21028304
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 21028305 can be divided by 16 positive divisors. The sum of these divisors (counting 21028305) is 1, the average is 0.0625.

Base conversion 21028305

Base System Value
2 Binary 1010000001101110111010001
3 Ternary 1110120100102010
4 Quaternary 1100031313101
5 Quinary 20340401210
6 Senary 2030413133
8 Octal 120156721
10 Decimal 21028305
12 Duodecimal 70611a9
16 Hexadecimal 140ddd1
20 Vigesimal 6b8af5
36 Base36 cipjl

Cryptographic Hash Functions

md5 b57e4245924a465c9b89837066b838bd
sha1 16f0ac8ecb4e23a5e3fa7945c4a5671663b27ea9
sha256 a6987d1ebc1aa7e5dc8a1c50e97b21bf0be2c651a40c66c9cf1304ac475a4c0e
sha512 784463e1a77f8d9f78c68a0917f39a2b91e096c913bb95263de775cbc225e546fb04f8a401122d5cdd683e8769407904c13293a525bc42eef2dd58ed01460b66
ripemd-160 86365a20e5233465264314375b08cd212ba3e520

21028305 as geometric shapes

Circle

Radius = n
Diameter 42056610
Circumference 132124737.01089
Area 1.3891796339549E+15

Sphere

Radius = n
Volume 3.8949457390123E+22
Surface area 5.5567185358196E+15
Circumference 132124737.01089

Square

Length = n
Perimeter 84113220
Area 442189611173025
Diagonal 29738514.124718

Cube

Length = n
Surface area 2653137667038150
Volume 9.2984980115778E+21
Space diagonal 36422092.657055

Equilateral Triangle

Length = n
Perimeter 63084915
Area 1.914737182827E+14
Altitude 18211046.328527

Triangular Pyramid

Length = n
Surface area 1.914737182827E+14
Volume 1.095838499806E+21
Height 9912838.0415727