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

81946989 (number)

81946989 is an odd 8-digits composite number following 81946988 and preceding 81946990. In scientific notation, it is written as 8.1946989 × 10^7. The sum of its digits is 54. It has a total of 3 prime factors and 8 positive divisors. There are 54403200 positive integers (up to 81946989) that are relatively prime to 81946989.

Interesting facts

81946989 has 8 divisors, whose sum is 91432440
The reverse of 81946989 is 98964918
Previous prime number is 241

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 54
Digital Root 9

Name

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

Notation

Scientific notation	8.1946989 × 10^7
Engineering notation	8.1946989 × 10^6

Prime Factorization of 81946989

Prime Factorization 9 × 241 × 37781

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81946989	Product of the distinct prime numbers

The prime factorization of 81946989 is 9 × 241 × 37781. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 3, 40, 53, 779, 422, 3429, 5700, 6566, 28859, 913573, 168607, 2486837, 4879431, 22138821, 92746675, 378120623, 617951518, 4733591288, 9321369664

Basic calculations (n = 81946989)

Multiplication

n×y

n×2	163893978
n×3	245840967
n×4	327787956
n×5	409734945

Division

n÷y

n÷2	40973494.5
n÷3	27315663
n÷3	20486747.25
n÷5	16389397.8

Exponentiation

n^y

n²	6715309006166121
n³	5.502993532599E+23
n⁴	4.5095375048296E+31
n⁵	3.6954302030336E+39

Nth Root

^y√n

²√n	9052.4576221046
³√n	434.35450835133
⁴√n	95.144404050394
⁵√n	38.256620264732

Divisors of 81946989

1, 9, 241, 2169, 37781, 340029, 9105221, 81946989

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	-81946988	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 81946989 can be divided by 8 positive divisors. The sum of these divisors (counting 81946989) is 1, the average is 0.125.

Base conversion 81946989

Base	System	Value
2	Binary	100111000100110100101101101
3	Ternary	12201012100010200
4	Quaternary	10320212211231
5	Quinary	131434300424
6	Senary	12044224113
8	Octal	470464555
10	Decimal	81946989
12	Duodecimal	2353b039
16	Hexadecimal	4e2696d
20	Vigesimal	15c3799
36	Base36	1csep9

Cryptographic Hash Functions

md5	2e9b7e1757668c3aaa64cb5059db20d8
sha1	e4fa26b8b2adbe18c5e6bbbefd4377b93f5eeb32
sha256	13d70c9c5443151d6c64d9d6c8fec763d9271293c71784e1b6f25fef3b7be906
sha512	aa05a907a3c3063567d75fde3c6443801bdb66a5f3408ca9c001bef7018c49823d537b34ae0c4e6a2cc892f6fa7bc2b907f347cb4d3b6143b65762e317270e01
ripemd-160	24c4744fdb3b529a88541b8341e12718143a31de

81946989 as geometric shapes

Circle

Radius = n

Diameter	163893978
Circumference	514888117.25241
Area	2.1096765440357E+16

Sphere

Radius = n

Volume	2.3050885406353E+24
Surface area	8.4387061761427E+16
Circumference	514888117.25241

Square

Length = n

Perimeter	327787956
Area	6715309006166121
Diagonal	115890543.23944

Cube

Length = n

Surface area	40291854036996726
Volume	5.502993532599E+23
Space diagonal	141936348.47529

Equilateral Triangle

Length = n

Perimeter	245840967
Area	2.9078140968011E+15
Altitude	70968174.237644

Triangular Pyramid

Length = n

Surface area	2.9078140968011E+15
Volume	6.4853400728774E+22
Height	38630181.079813