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

81640121 (number)

81640121 is an odd 8-digits composite number following 81640120 and preceding 81640122. In scientific notation, it is written as 8.1640121 × 10^7. The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors. There are 80544528 positive integers (up to 81640121) that are relatively prime to 81640121.

Interesting facts

81640121 has 8 divisors, whose sum is 82743360
The reverse of 81640121 is 12104618
Previous prime number is 3517

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5

Name

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

Notation

Scientific notation	8.1640121 × 10^7
Engineering notation	8.1640121 × 10^6

Prime Factorization of 81640121

Prime Factorization 139 × 3517 × 167

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81640121	Product of the distinct prime numbers

The prime factorization of 81640121 is 139 × 3517 × 167. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 9, 16, 28, 38, 465, 5931, 9107, 28287, 77138, 795657, 461190, 1672336, 4090823, 15108420, 72772798, 582532750, 528465589, 3289423347, 812822602

Basic calculations (n = 81640121)

Multiplication

n×y

n×2	163280242
n×3	244920363
n×4	326560484
n×5	408200605

Division

n÷y

n÷2	40820060.5
n÷3	27213373.666667
n÷3	20410030.25
n÷5	16328024.2

Exponentiation

n^y

n²	6665109356894641
n³	5.4414033437511E+23
n⁴	4.4423682739364E+31
n⁵	3.6267548341073E+39

Nth Root

^y√n

²√n	9035.4922942804
³√n	433.81165243561
⁴√n	95.055206560611
⁵√n	38.227925233764

Divisors of 81640121

1, 139, 167, 3517, 23213, 488863, 587339, 81640121

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	-81640120	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 81640121 can be divided by 8 positive divisors. The sum of these divisors (counting 81640121) is 1, the average is 0.125.

Base conversion 81640121

Base	System	Value
2	Binary	100110111011011101010111001
3	Ternary	12200121202012012
4	Quaternary	10313123222321
5	Quinary	131344440441
6	Senary	12033455305
8	Octal	467335271
10	Decimal	81640121
12	Duodecimal	23411535
16	Hexadecimal	4ddbab9
20	Vigesimal	15a5061
36	Base36	1cltx5

Cryptographic Hash Functions

md5	5bf1763dc6517aa6bc859729a5c0fa6e
sha1	1a1b8b685b6d67039d36ecae0a02ad15c0191bc0
sha256	27d6195327dfe34663a1971559996a902e075e3d56fe95b4f886e5326ab4b87e
sha512	72b8f76e5900f75f4ed2e1c393be05fb80b04360450f2a859e9f39ffe89ed316db75f25e6a57c758afe0ad0f6d3e6a1a923831132964e26872aa7dac246ce254
ripemd-160	bf54713a51fef8dc1bb00fc791bad0e5f645f4cc

81640121 as geometric shapes

Circle

Radius = n

Diameter	163280242
Circumference	512960008.74356
Area	2.0939058590993E+16

Sphere

Radius = n

Volume	2.2792897026597E+24
Surface area	8.3756234363971E+16
Circumference	512960008.74356

Square

Length = n

Perimeter	326560484
Area	6665109356894641
Diagonal	115456566.35198

Cube

Length = n

Surface area	39990656141367846
Volume	5.4414033437511E+23
Space diagonal	141404837.50807

Equilateral Triangle

Length = n

Perimeter	244920363
Area	2.8860770110361E+15
Altitude	70702418.754035

Triangular Pyramid

Length = n

Surface area	2.8860770110361E+15
Volume	6.4127553392293E+22
Height	38485522.117327