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

81371490 (number)

81371490 is an even 8-digits composite number following 81371489 and preceding 81371491. In scientific notation, it is written as 8.1371490 × 10^7. The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors. There are 20556864 positive integers (up to 81371490) that are relatively prime to 81371490.

Interesting facts

81371490 has 16 divisors, whose sum is 137047680
The reverse of 81371490 is 09417318
Previous prime number is 19

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 33
Digital Root 6

Name

Name	eighty-one million three hundred seventy-one thousand four hundred ninety

Notation

Scientific notation	8.1371490 × 10^7
Engineering notation	8.1371490 × 10^6

Prime Factorization of 81371490

Prime Factorization 2 × 15 × 19 × 142757

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	81371490	Product of the distinct prime numbers

The prime factorization of 81371490 is 2 × 15 × 19 × 142757. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 8, 10, 64, 889, 372, 6401, 2894, 50698, 94605, 600692, 211973, 5936414, 2716621, 62361732, 21660986, 662661278, 820183808, 7139477792, 5639822018

Basic calculations (n = 81371490)

Multiplication

n×y

n×2	162742980
n×3	244114470
n×4	325485960
n×5	406857450

Division

n÷y

n÷2	40685745
n÷3	27123830
n÷3	20342872.5
n÷5	16274298

Exponentiation

n^y

n²	6621319384820100
n³	5.3878662410869E+23
n⁴	4.3841870395794E+31
n⁵	3.5674783184927E+39

Nth Root

^y√n

²√n	9020.614724064
³√n	433.33532083244
⁴√n	94.976916795946
⁵√n	38.202734804257

Divisors of 81371490

1, 2, 15, 19, 30, 38, 285, 570, 142757, 285514, 2141355, 2712383, 4282710, 5424766, 40685745, 81371490

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81371489	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	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	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81371490 can be divided by 16 positive divisors. The sum of these divisors (counting 81371490) is 1, the average is 0.0625.

Base conversion 81371490

Base	System	Value
2	Binary	100110110011010000101100010
3	Ternary	12200010002200220
4	Quaternary	10312122011202
5	Quinary	131312341430
6	Senary	12024023510
8	Octal	466320542
10	Decimal	81371490
12	Duodecimal	23301b96
16	Hexadecimal	4d9a162
20	Vigesimal	158b8ea
36	Base36	1cg2n6

Cryptographic Hash Functions

md5	2f49a51db31ecbb97a97b3988e883d2e
sha1	012b1b6ac1c8ffbab14d113e29301b18eb80bbd7
sha256	92523b7e9e6a43b069ad83974994540632ec42517a09bd9cf4e440a8dbcb6976
sha512	8a0deb93ac945047a7fbeb3357fc531dc653b759ef04ab96bbdc3f136fea3bd4d3a7af23723f2d94dfd502468ce6be3f9ba78c0dd1c882d5300b15de316748c4
ripemd-160	0c13f3ddcc101c48fe335e0314631ae780cebc9e

81371490 as geometric shapes

Circle

Radius = n

Diameter	162742980
Circumference	511272150.39131
Area	2.0801488336423E+16

Sphere

Radius = n

Volume	2.2568641335364E+24
Surface area	8.320595334569E+16
Circumference	511272150.39131

Square

Length = n

Perimeter	325485960
Area	6621319384820100
Diagonal	115076664.74851

Cube

Length = n

Surface area	39727916308920600
Volume	5.3878662410869E+23
Space diagonal	140939554.96758

Equilateral Triangle

Length = n

Perimeter	244114470
Area	2.8671153969123E+15
Altitude	70469777.483791

Triangular Pyramid

Length = n

Surface area	2.8671153969123E+15
Volume	6.3496612586644E+22
Height	38358888.249502