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

81609986 (number)

81609986 is an even 8-digits composite number following 81609985 and preceding 81609987. In scientific notation, it is written as 8.1609986 × 10^7. The sum of its digits is 47. It has a total of 2 prime factors and 4 positive divisors. There are 40804992 positive integers (up to 81609986) that are relatively prime to 81609986.

Interesting facts

81609986 has 4 divisors, whose sum is 122414982
The reverse of 81609986 is 68990618
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 47
Digital Root 2

Name

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

Notation

Scientific notation	8.1609986 × 10^7
Engineering notation	8.1609986 × 10^6

Prime Factorization of 81609986

Prime Factorization 2 × 40804993

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81609986	Product of the distinct prime numbers

The prime factorization of 81609986 is 2 × 40804993. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 8, 32, 60, 803, 48, 2058, 1094, 3960, 72580, 461672, 160220, 6721038, 1712936, 44458411, 34783339, 679489006, 197986106, 8038027785, 3493651809

Basic calculations (n = 81609986)

Multiplication

n×y

n×2	163219972
n×3	244829958
n×4	326439944
n×5	408049930

Division

n÷y

n÷2	40804993
n÷3	27203328.666667
n÷3	20402496.5
n÷5	16321997.2

Exponentiation

n^y

n²	6660189814920196
n³	5.4353799755298E+23
n⁴	4.4358128370767E+31
n⁵	3.6200662353245E+39

Nth Root

^y√n

²√n	9033.8245499899
³√n	433.75826968373
⁴√n	95.046433652136
⁵√n	38.225102678773

Divisors of 81609986

1, 2, 40804993, 81609986

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	-81609985	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 81609986 can be divided by 4 positive divisors. The sum of these divisors (counting 81609986) is 1, the average is 0.25.

Base conversion 81609986

Base	System	Value
2	Binary	100110111010100010100000010
3	Ternary	12200120012212002
4	Quaternary	10313110110002
5	Quinary	131343004421
6	Senary	12033104002
8	Octal	467242402
10	Decimal	81609986
12	Duodecimal	233b8002
16	Hexadecimal	4dd4502
20	Vigesimal	15a14j6
36	Base36	1cl6o2

Cryptographic Hash Functions

md5	f31daf65721235a34bb8c0a3e2746123
sha1	04b1ff8937b1e072d0867ebb6f61e8d6383d3cf7
sha256	3bc476087849ac69912a5dcd7fc2ba6166b812261afafd844d1c18b01913154c
sha512	e1b77f2ee8e696b97a7433c72b2074ab64124b0349f2ecbb337f1454eb961a55fbd193a0df0a01e606eecd8f9f3680121d2888cd70b3366a5ff1b53e4bf82d3c
ripemd-160	edd9a6b55e40df2b672383112e8609e38387febc

81609986 as geometric shapes

Circle

Radius = n

Diameter	163219972
Circumference	512770664.95433
Area	2.0923603394067E+16

Sphere

Radius = n

Volume	2.2767666400791E+24
Surface area	8.3694413576267E+16
Circumference	512770664.95433

Square

Length = n

Perimeter	326439944
Area	6660189814920196
Diagonal	115413949.02628

Cube

Length = n

Surface area	39961138889521176
Volume	5.4353799755298E+23
Space diagonal	141352642.15698

Equilateral Triangle

Length = n

Perimeter	244829958
Area	2.8839467868736E+15
Altitude	70676321.078492

Triangular Pyramid

Length = n

Surface area	2.8839467868736E+15
Volume	6.4056567317045E+22
Height	38471316.342093