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

81749091 (number)

81749091 is an odd 8-digits composite number following 81749090 and preceding 81749092. In scientific notation, it is written as 8.1749091 × 10^7. The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors. There are 54413352 positive integers (up to 81749091) that are relatively prime to 81749091.

Interesting facts

81749091 has 8 divisors, whose sum is 109170880
The reverse of 81749091 is 19094718
Previous prime number is 643

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3

Name

Name	eighty-one million seven hundred forty-nine thousand ninety-one

Notation

Scientific notation	8.1749091 × 10^7
Engineering notation	8.1749091 × 10^6

Prime Factorization of 81749091

Prime Factorization 3 × 643 × 42379

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81749091	Product of the distinct prime numbers

The prime factorization of 81749091 is 3 × 643 × 42379. Since it has a total of 3 prime factors.

Most popular turbo-numbers

7, 10, 76, 79, 97, 112, 6489, 2014, 80510, 11402, 870889, 280054, 199065, 9160218, 58149977, 45565104, 530349160, 555381058, 9792157734, 1977833720

Basic calculations (n = 81749091)

Multiplication

n×y

n×2	163498182
n×3	245247273
n×4	326996364
n×5	408745455

Division

n÷y

n÷2	40874545.5
n÷3	27249697
n÷3	20437272.75
n÷5	16349818.2

Exponentiation

n^y

n²	6682913879326281
n³	5.4632213486621E+23
n⁴	4.4661337918492E+31
n⁵	3.6510237776805E+39

Nth Root

^y√n

²√n	9041.520392058
³√n	434.00457816176
⁴√n	95.086909677715
⁵√n	38.238124813721

Divisors of 81749091

1, 3, 643, 1929, 42379, 127137, 27249697, 81749091

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	-81749090	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 81749091 can be divided by 8 positive divisors. The sum of these divisors (counting 81749091) is 1, the average is 0.125.

Base conversion 81749091

Base	System	Value
2	Binary	100110111110110010001100011
3	Ternary	12200211021200010
4	Quaternary	10313312101203
5	Quinary	131411432331
6	Senary	12040100003
8	Octal	467662143
10	Decimal	81749091
12	Duodecimal	23464603
16	Hexadecimal	4df6463
20	Vigesimal	15aiceb
36	Base36	1co603

Cryptographic Hash Functions

md5	75b0859585a2a81a24ac4f2d4552af94
sha1	7a2ad961fee7ee464dd93f899be2d267899db273
sha256	b2b831012e4dbe5b1efce1ec0d6a9d2e737eed2c98c44a055d12ac24cc95b645
sha512	32a4d8a3949252a90a8faa75daebc6dfef0566e73c3bfd0c3950fec77f0d92a85ad0b85ee4cbd31f9131f4b48c783501812d62a20accf5f0d90b2bd982d4c447
ripemd-160	9089a25b4dddefe23ce029ba952eb15789d04eb0

81749091 as geometric shapes

Circle

Radius = n

Diameter	163498182
Circumference	513644687.44649
Area	2.0994993147865E+16

Sphere

Radius = n

Volume	2.2884288071856E+24
Surface area	8.3979972591459E+16
Circumference	513644687.44649

Square

Length = n

Perimeter	326996364
Area	6682913879326281
Diagonal	115610673.20387

Cube

Length = n

Surface area	40097483275957686
Volume	5.4632213486621E+23
Space diagonal	141593579.08457

Equilateral Triangle

Length = n

Perimeter	245247273
Area	2.8937865954001E+15
Altitude	70796789.542286

Triangular Pyramid

Length = n

Surface area	2.8937865954001E+15
Volume	6.4384681046034E+22
Height	38536891.067957