21491385 (number)

21491385 is an odd 8-digits composite number following 21491384 and preceding 21491386. In scientific notation, it is written as 2.1491385 × 10^7. The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors. There are 11432960 positive integers (up to 21491385) that are relatively prime to 21491385.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand three hundred eighty-five

Notation

Scientific notation 2.1491385 × 10^7
Engineering notation 2.1491385 × 10^6

Prime Factorization of 21491385

Prime Factorization 3 × 449 × 5 × 3191

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21491385
Product of the distinct prime numbers

The prime factorization of 21491385 is 3 × 449 × 5 × 3191. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 3, 90, 63, 40, 979, 281, 7665, 49455, 14061, 377215, 881947, 726468, 7914005, 64381041, 76023922, 114860867, 541563049, 8000165377, 9297955626

Basic calculations (n = 21491385)

Multiplication

n×y
n×2 42982770
n×3 64474155
n×4 85965540
n×5 107456925

Division

n÷y
n÷2 10745692.5
n÷3 7163795
n÷3 5372846.25
n÷5 4298277

Exponentiation

ny
n2 461879629218225
n3 9.9264329351861E+21
n4 2.1333279188676E+29
n5 4.5848171635633E+36

Nth Root

y√n
2√n 4635.8801753281
3√n 278.02774337963
4√n 68.087298193775
5√n 29.272032647303

Divisors of 21491385

1, 3, 5, 15, 449, 1347, 2245, 3191, 6735, 9573, 15955, 47865, 1432759, 4298277, 7163795, 21491385

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 -21491384
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 21491385 can be divided by 16 positive divisors. The sum of these divisors (counting 21491385) is 1, the average is 0.0625.

Base conversion 21491385

Base System Value
2 Binary 1010001111110111010111001
3 Ternary 1111102212122020
4 Quaternary 1101332322321
5 Quinary 21000211020
6 Senary 2044345053
8 Octal 121767271
10 Decimal 21491385
12 Duodecimal 7245189
16 Hexadecimal 147eeb9
20 Vigesimal 6e6895
36 Base36 csmux

Cryptographic Hash Functions

md5 d43610ff28df5d87bb05539012acfe7a
sha1 a8070c26d7701f0fe5d7360fd5d5fffb3475c84e
sha256 ee8d45d9b27fe1c04fd8f59f0f2700e784dcec365d396a48132be528653ab420
sha512 cb232c11745ae259453f5a7e622ea18be3bc4ac665f5cdea1b056624221541214b8037d3344724e60bf34296b10d2f7b51bd2be647689bae503d3c05547d3f40
ripemd-160 8bd57b36cf58cf501bc41180bfb4ca26c776f7b6

21491385 as geometric shapes

Circle

Radius = n
Diameter 42982770
Circumference 135034354.46294
Area 1.4510376499948E+15

Sphere

Radius = n
Volume 4.1579745047377E+22
Surface area 5.804150599979E+15
Circumference 135034354.46294

Square

Length = n
Perimeter 85965540
Area 461879629218225
Diagonal 30393408.141182

Cube

Length = n
Surface area 2771277775309350
Volume 9.9264329351861E+21
Space diagonal 37224170.745024

Equilateral Triangle

Length = n
Perimeter 64474155
Area 1.9999974619676E+14
Altitude 18612085.372512

Triangular Pyramid

Length = n
Surface area 1.9999974619676E+14
Volume 1.1698413402439E+21
Height 10131136.047061