Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

21493891 (number)

21493891 is an odd 8-digits composite number following 21493890 and preceding 21493892. In scientific notation, it is written as 2.1493891 × 10^7. The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors. There are 20559352 positive integers (up to 21493891) that are relatively prime to 21493891.

Interesting facts

21493891 has 4 divisors, whose sum is 22428432
The reverse of 21493891 is 19839412
Previous prime number is 23

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

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

Notation

Scientific notation	2.1493891 × 10^7
Engineering notation	2.1493891 × 10^6

Prime Factorization of 21493891

Prime Factorization 23 × 934517

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21493891	Product of the distinct prime numbers

The prime factorization of 21493891 is 23 × 934517. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 8, 21, 97, 576, 343, 7198, 8154, 120, 61411, 257538, 804935, 5879793, 4584628, 76199034, 70707306, 346894662, 954967369, 3164448650, 7404838270

Basic calculations (n = 21493891)

Multiplication

n×y

n×2	42987782
n×3	64481673
n×4	85975564
n×5	107469455

Division

n÷y

n÷2	10746945.5
n÷3	7164630.3333333
n÷3	5373472.75
n÷5	4298778.2

Exponentiation

n^y

n²	461987350319881
n³	9.9299057511543E+21
n⁴	2.1343231185558E+29
n⁵	4.5874908469019E+36

Nth Root

^y√n

²√n	4636.1504505354
³√n	278.03854942192
⁴√n	68.089282934508
⁵√n	29.272715267736

Divisors of 21493891

1, 23, 934517, 21493891

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21493890	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21493891 can be divided by 4 positive divisors. The sum of these divisors (counting 21493891) is 1, the average is 0.25.

Base conversion 21493891

Base	System	Value
2	Binary	1010001111111100010000011
3	Ternary	1111110000002001
4	Quaternary	1101333202003
5	Quinary	21000301031
6	Senary	2044404431
8	Octal	121774203
10	Decimal	21493891
12	Duodecimal	7246717
16	Hexadecimal	147f883
20	Vigesimal	6e6eeb
36	Base36	csosj

Cryptographic Hash Functions

md5	504b54bb612dc174acfcb0711b77adbd
sha1	b5eb28a2db8e0bc587f50fba463e45c2ad199225
sha256	2f52a855e474c3e0098455b4d5c9368155c0dda7d42ab2254028511ae8a5b82e
sha512	90487ad5a01dbc5f2b0103c892ccca61cfbb96cb93e2bc709a622d694d0eba54106b9793bb1f9798394074391d8e97ad81375578973711d4da76d961ead4389e
ripemd-160	a89e7696456d943bc125a2e4e5f3232b147bb9f1

21493891 as geometric shapes

Circle

Radius = n

Diameter	42987782
Circumference	135050100.12532
Area	1.4513760658164E+15

Sphere

Radius = n

Volume	4.1594291944887E+22
Surface area	5.8055042632654E+15
Circumference	135050100.12532

Square

Length = n

Perimeter	85975564
Area	461987350319881
Diagonal	30396952.160369

Cube

Length = n

Surface area	2771924101919286
Volume	9.9299057511543E+21
Space diagonal	37228511.264347

Equilateral Triangle

Length = n

Perimeter	64481673
Area	2.0004639080204E+14
Altitude	18614255.632174

Triangular Pyramid

Length = n

Surface area	2.0004639080204E+14
Volume	1.1702506155308E+21
Height	10132317.38679