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

81494890 (number)

81494890 is an even 8-digits composite number following 81494889 and preceding 81494891. In scientific notation, it is written as 8.1494890 × 10^7. The sum of its digits is 43. It has a total of 4 prime factors and 16 positive divisors. There are 31839696 positive integers (up to 81494890) that are relatively prime to 81494890.

Interesting facts

81494890 has 16 divisors, whose sum is 150103008
The reverse of 81494890 is 09849418
Previous prime number is 43

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 43
Digital Root 7

Name

Name	eighty-one million four hundred ninety-four thousand eight hundred ninety

Notation

Scientific notation	8.1494890 × 10^7
Engineering notation	8.1494890 × 10^6

Prime Factorization of 81494890

Prime Factorization 2 × 5 × 43 × 189523

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	81494890	Product of the distinct prime numbers

The prime factorization of 81494890 is 2 × 5 × 43 × 189523. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 9, 30, 73, 634, 367, 5337, 7649, 38282, 71024, 371525, 253668, 6481623, 4208095, 6773121, 91026096, 49996496, 271375552, 5800849539, 5912348621

Basic calculations (n = 81494890)

Multiplication

n×y

n×2	162989780
n×3	244484670
n×4	325979560
n×5	407474450

Division

n÷y

n÷2	40747445
n÷3	27164963.333333
n÷3	20373722.5
n÷5	16298978

Exponentiation

n^y

n²	6641417096112100
n³	5.4124155569178E+23
n⁴	4.410842104453E+31
n⁵	3.5946109210977E+39

Nth Root

^y√n

²√n	9027.4520214732
³√n	433.55426144017
⁴√n	95.012904499721
⁵√n	38.214314684204

Divisors of 81494890

1, 2, 5, 10, 43, 86, 215, 430, 189523, 379046, 947615, 1895230, 8149489, 16298978, 40747445, 81494890

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	-81494889	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 81494890 can be divided by 16 positive divisors. The sum of these divisors (counting 81494890) is 1, the average is 0.0625.

Base conversion 81494890

Base	System	Value
2	Binary	100110110111000001101101010
3	Ternary	12200100100222021
4	Quaternary	10312320031222
5	Quinary	131330314030
6	Senary	12030415054
8	Octal	466701552
10	Decimal	81494890
12	Duodecimal	2336148a
16	Hexadecimal	4db836a
20	Vigesimal	1596h4a
36	Base36	1cipuy

Cryptographic Hash Functions

md5	154e3593769e9e44594aa4f2f9610e3a
sha1	34455d2c2071aec59fa5f82bba696b10da06c736
sha256	5cd37c43fc18783d75b37db90b6940c6dec91a6b3e512cccda1380a8a3e56ab1
sha512	e2838f2d54e60249fc2dfa8f5d8287ecbec944eb7cf7e460f7e1bfae633aba4fa0a4b271403e732b7e459830ceac092f07b592fb5914ffd35774925922000743
ripemd-160	aea2392d7c7f1f93a93e6a528e58c088551b9e19

81494890 as geometric shapes

Circle

Radius = n

Diameter	162989780
Circumference	512047495.45822
Area	2.0864627158571E+16

Sphere

Radius = n

Volume	2.2671473269051E+24
Surface area	8.3458508634286E+16
Circumference	512047495.45822

Square

Length = n

Perimeter	325979560
Area	6641417096112100
Diagonal	115251178.7021

Cube

Length = n

Surface area	39848502576672600
Volume	5.4124155569178E+23
Space diagonal	141153290.03724

Equilateral Triangle

Length = n

Perimeter	244484670
Area	2.8758179611807E+15
Altitude	70576645.018618

Triangular Pyramid

Length = n

Surface area	2.8758179611807E+15
Volume	6.3785929048268E+22
Height	38417059.567368