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

81749649 (number)

81749649 is an odd 8-digits composite number following 81749648 and preceding 81749650. In scientific notation, it is written as 8.1749649 × 10^7. The sum of its digits is 48. It has a total of 2 prime factors and 4 positive divisors. There are 54499764 positive integers (up to 81749649) that are relatively prime to 81749649.

Interesting facts

81749649 has 4 divisors, whose sum is 108999536
The reverse of 81749649 is 94694718
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 48
Digital Root 3

Name

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

Notation

Scientific notation	8.1749649 × 10^7
Engineering notation	8.1749649 × 10^6

Prime Factorization of 81749649

Prime Factorization 3 × 27249883

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81749649	Product of the distinct prime numbers

The prime factorization of 81749649 is 3 × 27249883. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 1, 16, 10, 689, 267, 4112, 3241, 60763, 45663, 269879, 623730, 1121298, 7256655, 32586552, 53297963, 801888197, 102270775, 5453202011, 4049211561

Basic calculations (n = 81749649)

Multiplication

n×y

n×2	163499298
n×3	245248947
n×4	326998596
n×5	408748245

Division

n÷y

n÷2	40874824.5
n÷3	27249883
n÷3	20437412.25
n÷5	16349929.8

Exponentiation

n^y

n²	6683005111623201
n³	5.463333221404E+23
n⁴	4.4662557321982E+31
n⁵	3.6511483845144E+39

Nth Root

^y√n

²√n	9041.5512496474
³√n	434.00556563045
⁴√n	95.0870719375
⁵√n	38.238177014462

Divisors of 81749649

1, 3, 27249883, 81749649

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	-81749648	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 81749649 can be divided by 4 positive divisors. The sum of these divisors (counting 81749649) is 1, the average is 0.25.

Base conversion 81749649

Base	System	Value
2	Binary	100110111110110011010010001
3	Ternary	12200211022102210
4	Quaternary	10313312122101
5	Quinary	131411442044
6	Senary	12040102333
8	Octal	467663221
10	Decimal	81749649
12	Duodecimal	234649a9
16	Hexadecimal	4df6691
20	Vigesimal	15aie29
36	Base36	1co6fl

Cryptographic Hash Functions

md5	53a2a0f0cbfd8017f59c45f9eb0eaca5
sha1	c61564b84795b542379f2c159571d2d76b5464f3
sha256	cc9f4367b2f6990d3c222ac9060728ffd2e22806423b4f248164e855760116ed
sha512	1cd8324a33cccc2c02e4a0cd07b79fad91c6733ea86b6eb15296ba84d210553bc0bc9291fb689b6e9d70ae8d91f73d86002054d07b75a38d763273cb55d0a082
ripemd-160	5a060e618d015b1554246b9b46dd77b4f56047b6

81749649 as geometric shapes

Circle

Radius = n

Diameter	163499298
Circumference	513648193.46389
Area	2.0995279762578E+16

Sphere

Radius = n

Volume	2.2884756683301E+24
Surface area	8.3981119050314E+16
Circumference	513648193.46389

Square

Length = n

Perimeter	326998596
Area	6683005111623201
Diagonal	115611462.33504

Cube

Length = n

Surface area	40098030669739206
Volume	5.463333221404E+23
Space diagonal	141594545.56892

Equilateral Triangle

Length = n

Perimeter	245248947
Area	2.8938261001435E+15
Altitude	70797272.784461

Triangular Pyramid

Length = n

Surface area	2.8938261001435E+15
Volume	6.4385999478942E+22
Height	38537154.11168