18981372 (number)

18981372 is an even 8-digits composite number following 18981371 and preceding 18981373. In scientific notation, it is written as 1.8981372 × 10^7. The sum of its digits is 39. It has a total of 5 prime factors and 24 positive divisors. There are 6267568 positive integers (up to 18981372) that are relatively prime to 18981372.

Interesting facts

Basic properties

Name

Name eighteen million nine hundred eighty-one thousand three hundred seventy-two

Notation

Scientific notation 1.8981372 × 10^7
Engineering notation 1.8981372 × 10^6

Prime Factorization of 18981372

Prime Factorization 2 × 2 × 3 × 107 × 14783

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 9490686
Product of the distinct prime numbers

The prime factorization of 18981372 is 2 × 2 × 3 × 107 × 14783. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 9, 21, 98, 572, 439, 9311, 105, 70275, 60107, 265179, 98258, 1356052, 8364639, 18025414, 31785483, 60611193, 792763802, 4597833587, 9587900905

Basic calculations (n = 18981372)

Multiplication

n×y
n×2 37962744
n×3 56944116
n×4 75925488
n×5 94906860

Division

n÷y
n÷2 9490686
n÷3 6327124
n÷3 4745343
n÷5 3796274.4

Exponentiation

ny
n2 360292483002384
n3 6.8388456486719E+21
n4 1.2981067330802E+29
n5 2.4639846796301E+36

Nth Root

y√n
2√n 4356.7616414029
3√n 266.75293111893
4√n 66.00576975843
5√n 28.553905648122

Divisors of 18981372

1, 2, 3, 4, 6, 12, 107, 214, 321, 428, 642, 1284, 14783, 29566, 44349, 59132, 88698, 177396, 1581781, 3163562, 4745343, 6327124, 9490686, 18981372

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18981371
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18981372 can be divided by 24 positive divisors. The sum of these divisors (counting 18981372) is 1, the average is 0.041666666666667.

Base conversion 18981372

Base System Value
2 Binary 1001000011010000111111100
3 Ternary 1022201100112210
4 Quaternary 1020122013330
5 Quinary 14324400442
6 Senary 1514500420
8 Octal 110320774
10 Decimal 18981372
12 Duodecimal 6434710
16 Hexadecimal 121a1fc
20 Vigesimal 5icd8c
36 Base36 bau4c

Cryptographic Hash Functions

md5 435f79fda7e512d209bc5c381977ffea
sha1 4aa618446f7e5e3ab3750616632a956ce3f29902
sha256 a5d07a622ad91cc4b0aa21f6d58392469b5e3f87137b71eb972ce1816b68e5c9
sha512 a35c78c47873da5e7ceead6c3fd9a8bf1c29557c604366729f6e5b1ba710430b473d1017f0e82d5880253bac3d6dad6d293d225ae6501df12f4ac82546ea6978
ripemd-160 d15d57475139fafe03ff18607b387b1f6952256c

18981372 as geometric shapes

Circle

Radius = n
Diameter 37962744
Circumference 119263477.66051
Area 1.1318922177439E+15

Sphere

Radius = n
Volume 2.8646489665203E+22
Surface area 4.5275688709757E+15
Circumference 119263477.66051

Square

Length = n
Perimeter 75925488
Area 360292483002384
Diagonal 26843713.714849

Cube

Length = n
Surface area 2161754898014304
Volume 6.8388456486719E+21
Space diagonal 32876700.701365

Equilateral Triangle

Length = n
Perimeter 56944116
Area 1.5601122153632E+14
Altitude 16438350.350683

Triangular Pyramid

Length = n
Surface area 1.5601122153632E+14
Volume 8.0596568894401E+20
Height 8947904.5716163