18882981 (number)

18882981 is an odd 8-digits composite number following 18882980 and preceding 18882982. In scientific notation, it is written as 1.8882981 × 10^7. The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors. There are 11556000 positive integers (up to 18882981) that are relatively prime to 18882981.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.8882981 × 10^7
Engineering notation 1.8882981 × 10^6

Prime Factorization of 18882981

Prime Factorization 9 × 13 × 643 × 251

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 18882981
Product of the distinct prime numbers

The prime factorization of 18882981 is 9 × 13 × 643 × 251. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 7, 9, 73, 367, 289, 9583, 5062, 35030, 73633, 504982, 792869, 2233158, 7754456, 91945264, 66585345, 628102098, 28279965, 1430654179, 4689456479

Basic calculations (n = 18882981)

Multiplication

n×y
n×2 37765962
n×3 56648943
n×4 75531924
n×5 94414905

Division

n÷y
n÷2 9441490.5
n÷3 6294327
n÷3 4720745.25
n÷5 3776596.2

Exponentiation

ny
n2 356566971446361
n3 6.7330473470492E+21
n4 1.2714000512643E+29
n5 2.4007823011423E+36

Nth Root

y√n
2√n 4345.4552120578
3√n 266.29122287068
4√n 65.920066838996
5√n 28.524241926401

Divisors of 18882981

1, 9, 13, 117, 251, 643, 2259, 3263, 5787, 8359, 29367, 75231, 161393, 1452537, 2098109, 18882981

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18882980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18882981 can be divided by 16 positive divisors. The sum of these divisors (counting 18882981) is 1, the average is 0.0625.

Base conversion 18882981

Base System Value
2 Binary 1001000000010000110100101
3 Ternary 1022112100120200
4 Quaternary 1020002012211
5 Quinary 14313223411
6 Senary 1512421113
8 Octal 110020645
10 Decimal 18882981
12 Duodecimal 63a7799
16 Hexadecimal 12021a5
20 Vigesimal 5i0791
36 Base36 b8q79

Cryptographic Hash Functions

md5 dc08e7c05569fea9e3332c331af0b4d3
sha1 c42a6e21e8a635f39844d1303fae0a8358b6b7ef
sha256 4321fdd15f18bf0693003edfe0dadd329845823892c561e48c3f1d428c338bef
sha512 4f31cbe09ffa613cf53b773ef7c606d0669b8d41700eef5bf4995b910c832f4bfe0254a472142ef50f71d9caeb038149bd1f8064d23bc2a7eead29f3d80e9304
ripemd-160 bd668f24b98ea617941a7ae4b6a9fd563bee1366

18882981 as geometric shapes

Circle

Radius = n
Diameter 37765962
Circumference 118645268.77495
Area 1.1201881780086E+15

Sphere

Radius = n
Volume 2.8203322775683E+22
Surface area 4.4807527120346E+15
Circumference 118645268.77495

Square

Length = n
Perimeter 75531924
Area 356566971446361
Diagonal 26704567.828233

Cube

Length = n
Surface area 2139401828678166
Volume 6.7330473470492E+21
Space diagonal 32706282.490358

Equilateral Triangle

Length = n
Perimeter 56648943
Area 1.5439802771151E+14
Altitude 16353141.245179

Triangular Pyramid

Length = n
Surface area 1.5439802771151E+14
Volume 7.9349723952476E+20
Height 8901522.6094112