181801980 (number)

181801980 is an even 9-digits composite number following 181801979 and preceding 181801981. In scientific notation, it is written as 1.81801980 × 10^8. The sum of its digits is 36. It has a total of 7 prime factors and 72 positive divisors. There are 46872000 positive integers (up to 181801980) that are relatively prime to 181801980.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.81801980 × 10^8
Engineering notation 1.81801980 × 10^6

Prime Factorization of 181801980

Prime Factorization 2 × 2 × 9 × 5 × 31 × 31 × 1051

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2932290
Product of the distinct prime numbers

The prime factorization of 181801980 is 2 × 2 × 9 × 5 × 31 × 31 × 1051. Since it has a total of 7 prime factors.

Most popular turbo-numbers

9, 3, 31, 13, 504, 161, 2796, 3222, 1361, 27274, 201864, 237909, 3997524, 9656267, 95606760, 63069214, 131427319, 520114367, 9922248302, 5745002817

Basic calculations (n = 181801980)

Multiplication

n×y
n×2 363603960
n×3 545405940
n×4 727207920
n×5 909009900

Division

n÷y
n÷2 90900990
n÷3 60600660
n÷3 45450495
n÷5 36360396

Exponentiation

ny
n2 33051959931920400
n3 6.0089117585038E+24
n4 1.0924320553413E+33
n5 1.9860631067651E+41

Nth Root

y√n
2√n 13483.396456383
3√n 566.49950701931
4√n 116.11802812821
5√n 44.866244814526

Divisors of 181801980

1, 2, 4, 5, 9, 10, 18, 20, 31, 36, 45, 62, 90, 124, 155, 180, 279, 310, 558, 620, 961, 1051, 1116, 1395, 1922, 2102, 2790, 3844, 4204, 4805, 5255, 5580, 8649, 9459, 9610, 10510, 17298, 18918, 19220, 21020, 32581, 34596, 37836, 43245, 47295, 65162, 86490, 94590, 130324, 162905, 172980, 189180, 293229, 325810, 586458, 651620, 1010011, 1172916, 1466145, 2020022, 2932290, 4040044, 5050055, 5864580, 9090099, 10100110, 18180198, 20200220, 36360396, 45450495, 90900990, 181801980

72 divisors

τ Total Divisors 72
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -181801979
Sum of the proper positive divisors of n
A Arithmetic Mean 0.013888888888889
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 72
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 181801980 can be divided by 72 positive divisors. The sum of these divisors (counting 181801980) is 1, the average is 0.013888888888889.

Base conversion 181801980

Base System Value
2 Binary 1010110101100001001111111100
3 Ternary 110200002111102200
4 Quaternary 22311201033330
5 Quinary 333020130410
6 Senary 30012351500
8 Octal 1265411774
10 Decimal 181801980
12 Duodecimal 50a75590
16 Hexadecimal ad613fc
20 Vigesimal 2gg54j0
36 Base36 308nb0

Cryptographic Hash Functions

md5 bd9cc1e375cdad46b72c63241ab342a0
sha1 1cd936437872bce486fcce62e37b14727b50076c
sha256 31e5580c2934b378b493b1a730b05b719a43bebacd45f4c41006e1e88db9865d
sha512 91308f69f9fb239ae06adaab9c199e6979e7759436a04f524cb12a571d7e685d7653987aeaeed207eb4dae9f9f12d70842a53ff1a7c8857e452aee4fecd1e139
ripemd-160 a50971e2ca3f8d6e6712b59b82b5cc72a536359a

181801980 as geometric shapes

Circle

Radius = n
Diameter 363603960
Circumference 1142295529.5522
Area 1.0383579450887E+17

Sphere

Radius = n
Volume 2.5170070715446E+25
Surface area 4.1534317803546E+17
Circumference 1142295529.5522

Square

Length = n
Perimeter 727207920
Area 33051959931920400
Diagonal 257106825.78228

Cube

Length = n
Surface area 198311759591522400
Volume 6.0089117585038E+24
Space diagonal 314890266.27662

Equilateral Triangle

Length = n
Perimeter 545405940
Area 1.4311918472954E+16
Altitude 157445133.13831

Triangular Pyramid

Length = n
Surface area 1.4311918472954E+16
Volume 7.0815704199827E+23
Height 85702275.260761