21493890 (number)

21493890 is an even 8-digits composite number following 21493889 and preceding 21493891. In scientific notation, it is written as 2.1493890 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 5209920 positive integers (up to 21493890) that are relatively prime to 21493890.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1493890 × 10^7
Engineering notation 2.1493890 × 10^6

Prime Factorization of 21493890

Prime Factorization 2 × 27 × 55 × 7237

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21493890
Product of the distinct prime numbers

The prime factorization of 21493890 is 2 × 27 × 55 × 7237. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 3, 56, 2, 720, 773, 3315, 7950, 12301, 59713, 653701, 691250, 9017854, 1831559, 84376760, 9435838, 596662256, 506795321, 5041094067, 841477503

Basic calculations (n = 21493890)

Multiplication

n×y
n×2 42987780
n×3 64481670
n×4 85975560
n×5 107469450

Division

n÷y
n÷2 10746945
n÷3 7164630
n÷3 5373472.5
n÷5 4298778

Exponentiation

ny
n2 461987307332100
n3 9.9299043651924E+21
n4 2.1343227213596E+29
n5 4.5874897797405E+36

Nth Root

y√n
2√n 4636.1503426873
3√n 278.03854511002
4√n 68.089282142547
5√n 29.272714995354

Divisors of 21493890

1, 2, 27, 54, 55, 110, 1485, 2970, 7237, 14474, 195399, 390798, 398035, 796070, 10746945, 21493890

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 -21493889
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 21493890 can be divided by 16 positive divisors. The sum of these divisors (counting 21493890) is 1, the average is 0.0625.

Base conversion 21493890

Base System Value
2 Binary 1010001111111100010000010
3 Ternary 1111110000002000
4 Quaternary 1101333202002
5 Quinary 21000301030
6 Senary 2044404430
8 Octal 121774202
10 Decimal 21493890
12 Duodecimal 7246716
16 Hexadecimal 147f882
20 Vigesimal 6e6eea
36 Base36 csosi

Cryptographic Hash Functions

md5 cba057ac3ea22d720975679414075e28
sha1 310590b1a4711a127f6186464f5f093731f77f7b
sha256 bab5ab497927ec0e2a672a3d8c1dce077b1b07bbd32146009b4c7c234b96a7f7
sha512 e936f37e0e7fa3fe24755bdb3566b85fb61ae1be22699a9502e2c001b44ad12d8cda327404a6e417cea0761f489844117b5da064a8db4a1e547a2bb2d9b713c8
ripemd-160 d9fc365fa5ab5dd534e0533d9d684f2bba6610fb

21493890 as geometric shapes

Circle

Radius = n
Diameter 42987780
Circumference 135050093.84213
Area 1.4513759307663E+15

Sphere

Radius = n
Volume 4.1594286139383E+22
Surface area 5.805503723065E+15
Circumference 135050093.84213

Square

Length = n
Perimeter 85975560
Area 461987307332100
Diagonal 30396950.746155

Cube

Length = n
Surface area 2771923843992600
Volume 9.9299043651924E+21
Space diagonal 37228509.532297

Equilateral Triangle

Length = n
Perimeter 64481670
Area 2.0004637218778E+14
Altitude 18614254.766148

Triangular Pyramid

Length = n
Surface area 2.0004637218778E+14
Volume 1.1702504521936E+21
Height 10132316.915385