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

81998081 (number)

81998081 is an odd 8-digits composite number following 81998080 and preceding 81998082. In scientific notation, it is written as 8.1998081 × 10^7. The sum of its digits is 44. It has a total of 3 prime factors and 8 positive divisors. There are 74232000 positive integers (up to 81998081) that are relatively prime to 81998081.

Interesting facts

81998081 has 8 divisors, whose sum is 89826528
The reverse of 81998081 is 18089918
Previous prime number is 241

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 44
Digital Root 8

Name

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

Notation

Scientific notation	8.1998081 × 10^7
Engineering notation	8.1998081 × 10^6

Prime Factorization of 81998081

Prime Factorization 11 × 241 × 30931

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81998081	Product of the distinct prime numbers

The prime factorization of 81998081 is 11 × 241 × 30931. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 9, 28, 15, 720, 516, 6129, 6081, 59824, 33489, 546213, 540283, 1267451, 5386743, 77918640, 648970, 315690111, 88993455, 4875152830, 9509054204

Basic calculations (n = 81998081)

Multiplication

n×y

n×2	163996162
n×3	245994243
n×4	327992324
n×5	409990405

Division

n÷y

n÷2	40999040.5
n÷3	27332693.666667
n÷3	20499520.25
n÷5	16399616.2

Exponentiation

n^y

n²	6723685287682561
n³	5.513292908379E+23
n⁴	4.5207943847799E+31
n⁵	3.7069646414753E+39

Nth Root

^y√n

²√n	9055.2791784682
³√n	434.44475950165
⁴√n	95.159230652986
⁵√n	38.261389494177

Divisors of 81998081

1, 11, 241, 2651, 30931, 340241, 7454371, 81998081

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	-81998080	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 81998081 can be divided by 8 positive divisors. The sum of these divisors (counting 81998081) is 1, the average is 0.125.

Base conversion 81998081

Base	System	Value
2	Binary	100111000110011000100000001
3	Ternary	12201021221012222
4	Quaternary	10320303010001
5	Quinary	131442414311
6	Senary	12045300425
8	Octal	470630401
10	Decimal	81998081
12	Duodecimal	23564715
16	Hexadecimal	4e33101
20	Vigesimal	15c9f41
36	Base36	1cti4h

Cryptographic Hash Functions

md5	205347d52dbd19636c8ec2a5e55f80ef
sha1	42d0fbe44ebfad5dd17d0d66f98bf2942087c2bb
sha256	6c052d5a11367dca6d49eaf5a52e481ba34a6bedb30658cf3692a5452fa8a9a7
sha512	7a36a115dc314aa05382bba2ca2a4ff6c3411cae85e8d9a25aab4979dac69baa342722fda862f5cc44e524a8919adf4a94e2f49193126cc65cf477fe6dfa6cfa
ripemd-160	07c9bcd850cd1d5c9736a020c07c38bf8ea7f6d7

81998081 as geometric shapes

Circle

Radius = n

Diameter	163996162
Circumference	515209137.75612
Area	2.1123080304833E+16

Sphere

Radius = n

Volume	2.3094027330736E+24
Surface area	8.4492321219333E+16
Circumference	515209137.75612

Square

Length = n

Perimeter	327992324
Area	6723685287682561
Diagonal	115962798.23877

Cube

Length = n

Surface area	40342111726095366
Volume	5.513292908379E+23
Space diagonal	142024842.41515

Equilateral Triangle

Length = n

Perimeter	245994243
Area	2.9114411330924E+15
Altitude	71012421.207574

Triangular Pyramid

Length = n

Surface area	2.9114411330924E+15
Volume	6.4974780036375E+22
Height	38654266.079589