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

21991491 (number)

21991491 is an odd 8-digits composite number following 21991490 and preceding 21991492. In scientific notation, it is written as 2.1991491 × 10^7. The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors. There are 14598720 positive integers (up to 21991491) that are relatively prime to 21991491.

Interesting facts

21991491 has 8 divisors, whose sum is 24538800
The reverse of 21991491 is 19419912
Previous prime number is 241

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9

Name

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

Notation

Scientific notation	2.1991491 × 10^7
Engineering notation	2.1991491 × 10^6

Prime Factorization of 21991491

Prime Factorization 9 × 241 × 10139

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21991491	Product of the distinct prime numbers

The prime factorization of 21991491 is 9 × 241 × 10139. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 3, 77, 21, 223, 426, 3787, 9253, 43459, 56640, 419913, 218086, 5333136, 7753398, 35668432, 20195456, 704003157, 736879980, 3288247999, 9901689723

Basic calculations (n = 21991491)

Multiplication

n×y

n×2	43982982
n×3	65974473
n×4	87965964
n×5	109957455

Division

n÷y

n÷2	10995745.5
n÷3	7330497
n÷3	5497872.75
n÷5	4398298.2

Exponentiation

n^y

n²	483625676403081
n³	1.0635649709987E+22
n⁴	2.3389379487634E+29
n⁵	5.1436732849788E+36

Nth Root

^y√n

²√n	4689.508609652
³√n	280.16780332734
⁴√n	68.479986927948
⁵√n	29.407014453936

Divisors of 21991491

1, 9, 241, 2169, 10139, 91251, 2443499, 21991491

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21991490	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21991491 can be divided by 8 positive divisors. The sum of these divisors (counting 21991491) is 1, the average is 0.125.

Base conversion 21991491

Base	System	Value
2	Binary	1010011111001000001000011
3	Ternary	1112101021122200
4	Quaternary	1103321001003
5	Quinary	21112211431
6	Senary	2103204243
8	Octal	123710103
10	Decimal	21991491
12	Duodecimal	7446683
16	Hexadecimal	14f9043
20	Vigesimal	6h8ieb
36	Base36	d3cqr

Cryptographic Hash Functions

md5	80a68ea3e131ad29a7362d14cd772934
sha1	c069e62894f6181a4896b60d9047c461c431eda6
sha256	c6ae657b44c5f7efdf282ed37b0349aeaa8cf2c633bd1fddf6bcd863091d2b0a
sha512	b6d075964f3264ce7767887c53ae0353adceaedcab35e96968b3ad4ee1bd4b1f356afa7c23418bf9ed574a631cb0d1dc2c4a873968c11c8cf2651672853b6fa8
ripemd-160	34affb3b0910dd7d65be8dadbcd5e5d9358ddb02

21991491 as geometric shapes

Circle

Radius = n

Diameter	43982982
Circumference	138176613.13417
Area	1.5193548720753E+15

Sphere

Radius = n

Volume	4.4550505326734E+22
Surface area	6.0774194883013E+15
Circumference	138176613.13417

Square

Length = n

Perimeter	87965964
Area	483625676403081
Diagonal	31100664.829006

Cube

Length = n

Surface area	2901754058418486
Volume	1.0635649709987E+22
Space diagonal	38090379.746194

Equilateral Triangle

Length = n

Perimeter	65974473
Area	2.0941606084375E+14
Altitude	19045189.873097

Triangular Pyramid

Length = n

Surface area	2.0941606084375E+14
Volume	1.2534233387095E+21
Height	10366888.276335