18881 (number)

18881 is an odd 5-digits composite number following 18880 and preceding 18882. In scientific notation, it is written as 1.8881 × 10^4. The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors. There are 18564 positive integers (up to 18881) that are relatively prime to 18881.

Interesting facts

Basic properties

Name

Name eighteen thousand eight hundred eighty-one

Notation

Scientific notation 1.8881 × 10^4
Engineering notation 1.8881 × 10^3

Prime Factorization of 18881

Prime Factorization 79 × 239

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 18881
Product of the distinct prime numbers

The prime factorization of 18881 is 79 × 239. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 4, 23, 20, 4, 364, 6805, 1870, 86895, 32671, 768587, 938603, 4076457, 5853410, 83462982, 48099935, 347877424, 856875525, 5844799099, 8436162875

Basic calculations (n = 18881)

Multiplication

n×y
n×2 37762
n×3 56643
n×4 75524
n×5 94405

Division

n÷y
n÷2 9440.5
n÷3 6293.6666666667
n÷3 4720.25
n÷5 3776.2

Exponentiation

ny
n2 356492161
n3 6730928491841
n4 127086660854449921
n5 2.3995232435929E+21

Nth Root

y√n
2√n 137.40815114104
3√n 26.628191040459
4√n 11.722122296796
5√n 7.1648152858119

Divisors of 18881

1, 79, 239, 18881

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18880
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18881 can be divided by 4 positive divisors. The sum of these divisors (counting 18881) is 1, the average is 0.25.

Base conversion 18881

Base System Value
2 Binary 100100111000001
3 Ternary 221220022
4 Quaternary 10213001
5 Quinary 1101011
6 Senary 223225
8 Octal 44701
10 Decimal 18881
12 Duodecimal ab15
16 Hexadecimal 49c1
20 Vigesimal 2741
36 Base36 ekh

Cryptographic Hash Functions

md5 b66a88fda29fe547dfd323335fac0230
sha1 6460d1a779f7f488fed4430c9ffa9b309767daca
sha256 a7daa7ae8bf2cb853607a5e8b24bb36735ef82869721b7717846ab066904f0e5
sha512 d9a0b45783a8f28175aaa347f0f0f4dd49a78e6c3338b37b9248b78344c1a03439e13f81fcc1e5a072f1bb7bb124f21b69128b1d8f208fc3ff70e2800edda220
ripemd-160 3385fd28a743ff26d84a2e0dbe9c67d6d83c881b

18881 as geometric shapes

Circle

Radius = n
Diameter 37762
Circumference 118632.82178486
Area 1119953154.0599

Sphere

Radius = n
Volume 28194447335741
Surface area 4479812616.2398
Circumference 118632.82178486

Square

Length = n
Perimeter 75524
Area 356492161
Diagonal 26701.766271166

Cube

Length = n
Surface area 2138952966
Volume 6730928491841
Space diagonal 32702.851297708

Equilateral Triangle

Length = n
Perimeter 56643
Area 154365633.83801
Altitude 16351.425648854

Triangular Pyramid

Length = n
Surface area 154365633.83801
Volume 793247530043.75
Height 8900.5887570555