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

81015989 (number)

81015989 is an odd 8-digits composite number following 81015988 and preceding 81015990. In scientific notation, it is written as 8.1015989 × 10^7. The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors. There are 77638320 positive integers (up to 81015989) that are relatively prime to 81015989.

Interesting facts

81015989 has 8 divisors, whose sum is 84444672
The reverse of 81015989 is 98951018
Previous prime number is 103

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5

Name

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

Notation

Scientific notation	8.1015989 × 10^7
Engineering notation	8.1015989 × 10^6

Prime Factorization of 81015989

Prime Factorization 31 × 103 × 25373

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81015989	Product of the distinct prime numbers

The prime factorization of 81015989 is 31 × 103 × 25373. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 4, 53, 19, 789, 623, 3628, 2585, 34196, 41592, 51412, 17980, 1433200, 1807709, 50191452, 76119071, 709452295, 456157964, 2896477152, 1071125314

Basic calculations (n = 81015989)

Multiplication

n×y

n×2	162031978
n×3	243047967
n×4	324063956
n×5	405079945

Division

n÷y

n÷2	40507994.5
n÷3	27005329.666667
n÷3	20253997.25
n÷5	16203197.8

Exponentiation

n^y

n²	6563590473648121
n³	5.3175577361358E+23
n⁴	4.3080719905764E+31
n⁵	3.4902271299975E+39

Nth Root

^y√n

²√n	9000.8882339467
³√n	432.70333851349
⁴√n	94.873011093496
⁵√n	38.169295803837

Divisors of 81015989

1, 31, 103, 3193, 25373, 786563, 2613419, 81015989

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	-81015988	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 81015989 can be divided by 8 positive divisors. The sum of these divisors (counting 81015989) is 1, the average is 0.125.

Base conversion 81015989

Base	System	Value
2	Binary	100110101000011010010110101
3	Ternary	12122110001001012
4	Quaternary	10311003102311
5	Quinary	131220002424
6	Senary	12012242005
8	Octal	465032265
10	Decimal	81015989
12	Duodecimal	23170305
16	Hexadecimal	4d434b5
20	Vigesimal	1566jj9
36	Base36	1c8gc5

Cryptographic Hash Functions

md5	d94b556336bcd3897aca1242b295e9c2
sha1	687df045d638620f62d3e331986585d1b71d9f09
sha256	292824dc387f8b16472c53ce007a78b3ec6d39c005cd85fc80ed2f93534c50e7
sha512	44c6980f86e25651c3887a7c0c947d53e1c8f8d92adc29f9f6129ad5d934af3a431b931ac7b480734e855423c70eda6da254bad6e076311ebf4b12fe283e2cab
ripemd-160	22292f62a92448e2c41e36fb55aba684c6a00380

81015989 as geometric shapes

Circle

Radius = n

Diameter	162031978
Circumference	509038471.73142
Area	2.0620127613185E+16

Sphere

Radius = n

Volume	2.2274133758512E+24
Surface area	8.248051045274E+16
Circumference	509038471.73142

Square

Length = n

Perimeter	324063956
Area	6563590473648121
Diagonal	114573910.41287

Cube

Length = n

Surface area	39381542841888726
Volume	5.3175577361358E+23
Space diagonal	140323809.17344

Equilateral Triangle

Length = n

Perimeter	243047967
Area	2.8421180451084E+15
Altitude	70161904.586721

Triangular Pyramid

Length = n

Surface area	2.8421180451084E+15
Volume	6.2668018909544E+22
Height	38191303.470956