21691388 (number)

21691388 is an even 8-digits composite number following 21691387 and preceding 21691389. In scientific notation, it is written as 2.1691388 × 10^7. The sum of its digits is 38. It has a total of 5 prime factors and 24 positive divisors. There are 9517824 positive integers (up to 21691388) that are relatively prime to 21691388.

Interesting facts

Basic properties

Name

Name twenty-one million six hundred ninety-one thousand three hundred eighty-eight

Notation

Scientific notation 2.1691388 × 10^7
Engineering notation 2.1691388 × 10^6

Prime Factorization of 21691388

Prime Factorization 2 × 2 × 323 × 103 × 163

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10845694
Product of the distinct prime numbers

The prime factorization of 21691388 is 2 × 2 × 323 × 103 × 163. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 6, 21, 84, 276, 722, 7211, 8275, 47418, 56270, 658333, 394202, 4347944, 1496449, 3451401, 93950274, 509243530, 459904204, 4560741774, 5301792420

Basic calculations (n = 21691388)

Multiplication

n×y
n×2 43382776
n×3 65074164
n×4 86765552
n×5 108456940

Division

n÷y
n÷2 10845694
n÷3 7230462.6666667
n÷3 5422847
n÷5 4338277.6

Exponentiation

ny
n2 470516313366544
n3 1.0206151913563E+22
n4 2.2138560114404E+29
n5 4.8021609720287E+36

Nth Root

y√n
2√n 4657.4014213937
3√n 278.88754176679
4√n 68.245156761441
5√n 29.326313206898

Divisors of 21691388

1, 2, 4, 103, 163, 206, 323, 326, 412, 646, 652, 1292, 16789, 33269, 33578, 52649, 66538, 67156, 105298, 133076, 210596, 5422847, 10845694, 21691388

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21691387
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21691388 can be divided by 24 positive divisors. The sum of these divisors (counting 21691388) is 1, the average is 0.041666666666667.

Base conversion 21691388

Base System Value
2 Binary 1010010101111101111111100
3 Ternary 1111211000222202
4 Quaternary 1102233233330
5 Quinary 21023111023
6 Senary 2052531032
8 Octal 122575774
10 Decimal 21691388
12 Duodecimal 7320a78
16 Hexadecimal 14afbfc
20 Vigesimal 6fb898
36 Base36 cwx6k

Cryptographic Hash Functions

md5 99d5f7b39b6c61b92f46f04578df7b39
sha1 3f595ad3d61cb9b2e8d9d670ea46406522f5c92c
sha256 fd3de680265af3bdb204f12aedb7cb7ccb94e06ab96b376f5c8296e7d8a29ae6
sha512 299e8b6018981b039de77f328e9c4c5ca814900ca68b8b3ba29a79acabc044745166a4899f7beca1544237895e844861ed78e25354959a88ee87ecd53ed8e57f
ripemd-160 4ac89ff16bbf23e9f56ed86041967d4167d1eb20

21691388 as geometric shapes

Circle

Radius = n
Diameter 43382776
Circumference 136291010.37393
Area 1.4781705934665E+15

Sphere

Radius = n
Volume 4.2751429164096E+22
Surface area 5.912682373866E+15
Circumference 136291010.37393

Square

Length = n
Perimeter 86765552
Area 470516313366544
Diagonal 30676255.096297

Cube

Length = n
Surface area 2823097880199264
Volume 1.0206151913563E+22
Space diagonal 37570586.10269

Equilateral Triangle

Length = n
Perimeter 65074164
Area 2.0373954013521E+14
Altitude 18785293.051345

Triangular Pyramid

Length = n
Surface area 2.0373954013521E+14
Volume 1.2028065379834E+21
Height 10225418.365432