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

81421381 (number)

81421381 is an odd 8-digits composite number following 81421380 and preceding 81421382. In scientific notation, it is written as 8.1421381 × 10^7. The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors. There are 76336320 positive integers (up to 81421381) that are relatively prime to 81421381.

Interesting facts

81421381 has 8 divisors, whose sum is 86543424
The reverse of 81421381 is 18312418
Previous prime number is 17

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	eighty-one million four hundred twenty-one thousand three hundred eighty-one

Notation

Scientific notation	8.1421381 × 10^7
Engineering notation	8.1421381 × 10^6

Prime Factorization of 81421381

Prime Factorization 263 × 17 × 18211

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81421381	Product of the distinct prime numbers

The prime factorization of 81421381 is 263 × 17 × 18211. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 6, 71, 95, 515, 280, 2878, 6584, 99145, 12207, 672974, 877632, 188193, 749420, 3674548, 3766039, 570180787, 864273092, 8928653553, 4095038581

Basic calculations (n = 81421381)

Multiplication

n×y

n×2	162842762
n×3	244264143
n×4	325685524
n×5	407106905

Division

n÷y

n÷2	40710690.5
n÷3	27140460.333333
n÷3	20355345.25
n÷5	16284276.2

Exponentiation

n^y

n²	6629441283947161
n³	5.3977826459739E+23
n⁴	4.3949491737303E+31
n⁵	3.5784283114993E+39

Nth Root

^y√n

²√n	9023.3796883429
³√n	433.42386583141
⁴√n	94.991471661107
⁵√n	38.207418276006

Divisors of 81421381

1, 17, 263, 4471, 18211, 309587, 4789493, 81421381

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	-81421380	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 81421381 can be divided by 8 positive divisors. The sum of these divisors (counting 81421381) is 1, the average is 0.125.

Base conversion 81421381

Base	System	Value
2	Binary	100110110100110010001000101
3	Ternary	12200012122010201
4	Quaternary	10312212101011
5	Quinary	131320441011
6	Senary	12025050501
8	Octal	466462105
10	Decimal	81421381
12	Duodecimal	23326a31
16	Hexadecimal	4da6445
20	Vigesimal	158hd91
36	Base36	1ch551

Cryptographic Hash Functions

md5	6d7fd38886474d850eca0317b9857fd2
sha1	b42d13a4aea22cfcf9787e48adfe18fece488910
sha256	ea5fcefb338174b24031a78778770b6c632be36350ade45d0022a4568fced29d
sha512	885dcafc661104750c31d8176a51381c60252549c57fed63f3ade2e59a0ae70d89cd244ad40e447188abf130b9900f6bd92b923020ffd68f11e2685c9ad55792
ripemd-160	c366f10655a7c9dbd2d25fe3637a2bcd4356a4fa

81421381 as geometric shapes

Circle

Radius = n

Diameter	162842762
Circumference	511585624.78947
Area	2.0827004035053E+16

Sphere

Radius = n

Volume	2.2610179075021E+24
Surface area	8.3308016140213E+16
Circumference	511585624.78947

Square

Length = n

Perimeter	325685524
Area	6629441283947161
Diagonal	115147221.27735

Cube

Length = n

Surface area	39776647703682966
Volume	5.3977826459739E+23
Space diagonal	141025968.71442

Equilateral Triangle

Length = n

Perimeter	244264143
Area	2.8706322823978E+15
Altitude	70512984.357212

Triangular Pyramid

Length = n

Surface area	2.8706322823978E+15
Volume	6.3613478538987E+22
Height	38382407.092449