21493894 (number)

21493894 is an even 8-digits composite number following 21493893 and preceding 21493895. In scientific notation, it is written as 2.1493894 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors. There are 10448928 positive integers (up to 21493894) that are relatively prime to 21493894.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-three thousand eight hundred ninety-four

Notation

Scientific notation 2.1493894 × 10^7
Engineering notation 2.1493894 × 10^6

Prime Factorization of 21493894

Prime Factorization 2 × 43 × 293 × 853

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21493894
Product of the distinct prime numbers

The prime factorization of 21493894 is 2 × 43 × 293 × 853. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 9, 43, 21, 544, 508, 7584, 3808, 58321, 21568, 632527, 167558, 2050267, 5736233, 38145217, 74979388, 345680507, 707212557, 222186949, 6807780340

Basic calculations (n = 21493894)

Multiplication

n×y
n×2 42987788
n×3 64481682
n×4 85975576
n×5 107469470

Division

n÷y
n÷2 10746947
n÷3 7164631.3333333
n÷3 5373473.5
n÷5 4298778.8

Exponentiation

ny
n2 461987479283236
n3 9.9299099090411E+21
n4 2.1343243101448E+29
n5 4.5874940483875E+36

Nth Root

y√n
2√n 4636.1507740797
3√n 278.03856235762
4√n 68.08928531039
5√n 29.272716084881

Divisors of 21493894

1, 2, 43, 86, 293, 586, 853, 1706, 12599, 25198, 36679, 73358, 249929, 499858, 10746947, 21493894

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 -21493893
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 21493894 can be divided by 16 positive divisors. The sum of these divisors (counting 21493894) is 1, the average is 0.0625.

Base conversion 21493894

Base System Value
2 Binary 1010001111111100010000110
3 Ternary 1111110000002011
4 Quaternary 1101333202012
5 Quinary 21000301034
6 Senary 2044404434
8 Octal 121774206
10 Decimal 21493894
12 Duodecimal 724671a
16 Hexadecimal 147f886
20 Vigesimal 6e6eee
36 Base36 csosm

Cryptographic Hash Functions

md5 0f80a67e08c6e8d265c1a4fd77271eb0
sha1 3bb7e848223fe2a2b3e869db1c2e82cad0bd4da3
sha256 1aa7b3c0f8a3425b1df3ccc91df3938c381ae4a27a32e1040c0d4f376bb70a27
sha512 0546b50f7c5aede85996caa61d7dcf6b4ba70001e75bf4a644efa3edc09cafe01e3d7761bffcc33a3561c7c497f8e115c455be5545d3d6e3c0d58e9b82cddf8d
ripemd-160 bf2580ba37fb8b94aa93d4a1d301835e6247611a

21493894 as geometric shapes

Circle

Radius = n
Diameter 42987788
Circumference 135050118.97488
Area 1.4513764709667E+15

Sphere

Radius = n
Volume 4.1594309361403E+22
Surface area 5.8055058838667E+15
Circumference 135050118.97488

Square

Length = n
Perimeter 85975576
Area 461987479283236
Diagonal 30396956.40301

Cube

Length = n
Surface area 2771924875699416
Volume 9.9299099090411E+21
Space diagonal 37228516.4605

Equilateral Triangle

Length = n
Perimeter 64481682
Area 2.0004644664481E+14
Altitude 18614258.23025

Triangular Pyramid

Length = n
Surface area 2.0004644664481E+14
Volume 1.1702511055424E+21
Height 10132318.801003