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

21491931 (number)

21491931 is an odd 8-digits composite number following 21491930 and preceding 21491932. In scientific notation, it is written as 2.1491931 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 12 positive divisors. There are 13938048 positive integers (up to 21491931) that are relatively prime to 21491931.

Interesting facts

21491931 has 12 divisors, whose sum is 29456952
The reverse of 21491931 is 13919412
Previous prime number is 37

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3

Name

Name	twenty-one million four hundred ninety-one thousand nine hundred thirty-one

Notation

Scientific notation	2.1491931 × 10^7
Engineering notation	2.1491931 × 10^6

Prime Factorization of 21491931

Prime Factorization 3 × 37 × 37 × 5233

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	580863	Product of the distinct prime numbers

The prime factorization of 21491931 is 3 × 37 × 37 × 5233. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 3, 28, 84, 715, 57, 6306, 5545, 36035, 26210, 17981, 789267, 2884672, 5742673, 90404892, 64184249, 195850639, 659216535, 401480882, 7336641847

Basic calculations (n = 21491931)

Multiplication

n×y

n×2	42983862
n×3	64475793
n×4	85967724
n×5	107459655

Division

n÷y

n÷2	10745965.5
n÷3	7163977
n÷3	5372982.75
n÷5	4298386.2

Exponentiation

n^y

n²	461903098108761
n³	9.9271895132397E+21
n⁴	2.1335447204247E+29
n⁵	4.5853995916782E+36

Nth Root

^y√n

²√n	4635.9390634477
³√n	278.0300978403
⁴√n	68.087730638109
⁵√n	29.272181380085

Divisors of 21491931

1, 3, 37, 111, 1369, 4107, 5233, 15699, 193621, 580863, 7163977, 21491931

12 divisors

τ	Total Divisors	12	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21491930	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.083333333333333	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	12	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491931 can be divided by 12 positive divisors. The sum of these divisors (counting 21491931) is 1, the average is 0.083333333333333.

Base conversion 21491931

Base	System	Value
2	Binary	1010001111111000011011011
3	Ternary	1111102220101110
4	Quaternary	1101333003123
5	Quinary	21000220211
6	Senary	2044351403
8	Octal	121770333
10	Decimal	21491931
12	Duodecimal	7245563
16	Hexadecimal	147f0db
20	Vigesimal	6e69gb
36	Base36	csna3

Cryptographic Hash Functions

md5	00276bf49a4579bb47844a985f4ec832
sha1	00cc530c35bbbe3790b742e28295f255c2bdb9ce
sha256	2b977cd3d1e2d9c5f798121fae231b192e9440b38c41d2c570f68e15871e39bf
sha512	84ba149c473d30833f7c829b8bf99465c466451c1a311d3e2ad60877c4c9bd52ad415029bcd1788de6ac3e7a414f1fd9401a6c0a5ec2e94ef8e549df31735b21
ripemd-160	d4810a61a12d6516562e8287e939ac2d249621d2

21491931 as geometric shapes

Circle

Radius = n

Diameter	42983862
Circumference	135037785.08212
Area	1.4511113796888E+15

Sphere

Radius = n

Volume	4.1582914194117E+22
Surface area	5.8044455187554E+15
Circumference	135037785.08212

Square

Length = n

Perimeter	85967724
Area	461903098108761
Diagonal	30394180.301787

Cube

Length = n

Surface area	2771418588652566
Volume	9.9271895132397E+21
Space diagonal	37225116.444765

Equilateral Triangle

Length = n

Perimeter	64475793
Area	2.0000990852446E+14
Altitude	18612558.222382

Triangular Pyramid

Length = n

Surface area	2.0000990852446E+14
Volume	1.1699305038226E+21
Height	10131393.433929