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

81421749 (number)

81421749 is an odd 8-digits composite number following 81421748 and preceding 81421750. In scientific notation, it is written as 8.1421749 × 10^7. The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors. There are 54281160 positive integers (up to 81421749) that are relatively prime to 81421749.

Interesting facts

81421749 has 4 divisors, whose sum is 90468620
The reverse of 81421749 is 94712418
Previous prime number is 9

Basic properties

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

Name

Name	eighty-one million four hundred twenty-one thousand seven hundred forty-nine

Notation

Scientific notation	8.1421749 × 10^7
Engineering notation	8.1421749 × 10^6

Prime Factorization of 81421749

Prime Factorization 9 × 9046861

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81421749	Product of the distinct prime numbers

The prime factorization of 81421749 is 9 × 9046861. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 6, 41, 36, 468, 266, 3820, 7680, 78896, 22420, 993868, 692888, 3968719, 8121590, 91252859, 36516491, 786574220, 347503989, 9049130719, 9557629113

Basic calculations (n = 81421749)

Multiplication

n×y

n×2	162843498
n×3	244265247
n×4	325686996
n×5	407108745

Division

n÷y

n÷2	40710874.5
n÷3	27140583
n÷3	20355437.25
n÷5	16284349.8

Exponentiation

n^y

n²	6629501210219001
n³	5.3978558353365E+23
n⁴	4.3950286296295E+31
n⁵	3.5785091792951E+39

Nth Root

^y√n

²√n	9023.4000797925
³√n	433.42451881199
⁴√n	94.991578994101
⁵√n	38.207452813137

Divisors of 81421749

1, 9, 9046861, 81421749

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	-81421748	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 81421749 can be divided by 4 positive divisors. The sum of these divisors (counting 81421749) is 1, the average is 0.25.

Base conversion 81421749

Base	System	Value
2	Binary	100110110100110010110110101
3	Ternary	12200012122122100
4	Quaternary	10312212112311
5	Quinary	131320443444
6	Senary	12025052313
8	Octal	466462665
10	Decimal	81421749
12	Duodecimal	23327099
16	Hexadecimal	4da65b5
20	Vigesimal	158he79
36	Base36	1ch5f9

Cryptographic Hash Functions

md5	bc7d5aa1be5d51ef72ef03786b731e1f
sha1	9c3462f0d92455be10c1cecf2006fa0db8961f2d
sha256	2d1ad2e7c8b176acf2b65bcd9592e3ab7536bf76d052430291f36cdf6cdccda7
sha512	3aa146d4ce6a0bc016afca50b8db1d0e37c76e9fb78bc0e8b39eec8f32068f8e7a07469b4cbb591ea5d79d01f60995db94fff72a9ed749eb8be42807d9406b10
ripemd-160	da21592c4c0073faa2f6bd5ba0ab4a762328f8df

81421749 as geometric shapes

Circle

Radius = n

Diameter	162843498
Circumference	511587937.00166
Area	2.0827192298989E+16

Sphere

Radius = n

Volume	2.2610485649906E+24
Surface area	8.3308769195955E+16
Circumference	511587937.00166

Square

Length = n

Perimeter	325686996
Area	6629501210219001
Diagonal	115147741.70794

Cube

Length = n

Surface area	39777007261314006
Volume	5.3978558353365E+23
Space diagonal	141026606.10912

Equilateral Triangle

Length = n

Perimeter	244265247
Area	2.8706582312347E+15
Altitude	70513303.05456

Triangular Pyramid

Length = n

Surface area	2.8706582312347E+15
Volume	6.3614341083897E+22
Height	38382580.569313