18991888 (number)

18991888 is an even 8-digits composite number following 18991887 and preceding 18991889. In scientific notation, it is written as 1.8991888 × 10^7. The sum of its digits is 52. It has a total of 6 prime factors and 20 positive divisors. There are 9388544 positive integers (up to 18991888) that are relatively prime to 18991888.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.8991888 × 10^7
Engineering notation 1.8991888 × 10^6

Prime Factorization of 18991888

Prime Factorization 2 × 2 × 2 × 2 × 89 × 13337

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2373986
Product of the distinct prime numbers

The prime factorization of 18991888 is 2 × 2 × 2 × 2 × 89 × 13337. Since it has a total of 6 prime factors.

Most popular turbo-numbers

4, 9, 98, 53, 53, 453, 8523, 3689, 10511, 38168, 970087, 605084, 420003, 4367975, 61131801, 91596936, 889803061, 807803126, 4219270853, 5938378993

Basic calculations (n = 18991888)

Multiplication

n×y
n×2 37983776
n×3 56975664
n×4 75967552
n×5 94959440

Division

n÷y
n÷2 9495944
n÷3 6330629.3333333
n÷3 4747972
n÷5 3798377.6

Exponentiation

ny
n2 360691809804544
n3 6.8502184543252E+21
n4 1.3009858166008E+29
n5 2.470817691847E+36

Nth Root

y√n
2√n 4357.9683339832
3√n 266.80218389766
4√n 66.014909936947
5√n 28.557068816216

Divisors of 18991888

1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 13337, 26674, 53348, 106696, 213392, 1186993, 2373986, 4747972, 9495944, 18991888

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18991887
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18991888 can be divided by 20 positive divisors. The sum of these divisors (counting 18991888) is 1, the average is 0.05.

Base conversion 18991888

Base System Value
2 Binary 1001000011100101100010000
3 Ternary 1022201212222021
4 Quaternary 1020130230100
5 Quinary 14330220023
6 Senary 1515021224
8 Octal 110345420
10 Decimal 18991888
12 Duodecimal 643a814
16 Hexadecimal 121cb10
20 Vigesimal 5idje8
36 Base36 bb28g

Cryptographic Hash Functions

md5 b9334a5eb2a4ff9fc19f46bb6c003a3f
sha1 c8deb0751b827dec3193f7b58760c9875d1d33df
sha256 ceaf133394c7b647f84779abb44ed28f5224b9653eeb397292d3590c0fc4a655
sha512 6dede541dcd37c6aef4eea50d71f1cbce407fe78a15cb6ca2222d214e8bd544bb84ce520fc8e3bd07914714028c917b7ef520ee200b3cf4e9b7a3d32412ae0fd
ripemd-160 57df3c17d707edf05e25a71513c769dcab48f4da

18991888 as geometric shapes

Circle

Radius = n
Diameter 37983776
Circumference 119329551.6372
Area 1.133146739892E+15

Sphere

Radius = n
Volume 2.8694127962124E+22
Surface area 4.5325869595678E+15
Circumference 119329551.6372

Square

Length = n
Perimeter 75967552
Area 360691809804544
Diagonal 26858585.584671

Cube

Length = n
Surface area 2164150858827264
Volume 6.8502184543252E+21
Space diagonal 32894914.947658

Equilateral Triangle

Length = n
Perimeter 56975664
Area 1.5618413511386E+14
Altitude 16447457.473829

Triangular Pyramid

Length = n
Surface area 1.5618413511386E+14
Volume 8.0730598694376E+20
Height 8952861.8615569