1218 (number)

1218 is an even 4-digits composite number following 1217 and preceding 1219. In scientific notation, it is written as 1.218 × 10^3. The sum of its digits is 12. It has a total of 3 prime factors and 8 positive divisors. There are 336 positive integers (up to 1218) that are relatively prime to 1218.

Interesting facts

Basic properties

Name

Name one thousand two hundred eighteen

Notation

Scientific notation 1.218 × 10^3
Engineering notation 1.218 × 10^3

Prime Factorization of 1218

Prime Factorization 2 × 21 × 29

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 1218
Product of the distinct prime numbers

The prime factorization of 1218 is 2 × 21 × 29. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 8, 6, 23, 55, 165, 3713, 4278, 7352, 13934, 485969, 74408, 774450, 5866282, 14857753, 50276491, 318970181, 710681512, 6080492979, 8751616844

Basic calculations (n = 1218)

Multiplication

n×y
n×2 2436
n×3 3654
n×4 4872
n×5 6090

Division

n÷y
n÷2 609
n÷3 406
n÷3 304.5
n÷5 243.6

Exponentiation

ny
n2 1483524
n3 1806932232
n4 2200843458576
n5 2680627332545568

Nth Root

y√n
2√n 34.89985673323
3√n 10.679455147617
4√n 5.9076100694977
5√n 4.1412310125034

Divisors of 1218

1, 2, 21, 29, 42, 58, 609, 1218

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -1217
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1218 can be divided by 8 positive divisors. The sum of these divisors (counting 1218) is 1, the average is 0.125.

Base conversion 1218

Base System Value
2 Binary 10011000010
3 Ternary 1200010
4 Quaternary 103002
5 Quinary 14333
6 Senary 5350
8 Octal 2302
10 Decimal 1218
12 Duodecimal 856
16 Hexadecimal 4c2
20 Vigesimal 30i
36 Base36 xu

Cryptographic Hash Functions

md5 3f67fd97162d20e6fe27748b5b372509
sha1 7f1426a678c0021bbbf19eb1d7d6353054809224
sha256 f5efb6e05e55f7eda6e88bec2eec69e6e2919cce997d7da9e6723e71b3021a87
sha512 df9b2e270674b1f2f26b85069527fcfaba52befdd2a2e91c39b3e5b2e8e628588086ee7e072b7f2886f67b9d6256976d6dc93b68e327e8a15eef2152b2365264
ripemd-160 dc99dad79830b26758a6d62c9d558d10afa8b8d9

1218 as geometric shapes

Circle

Radius = n
Diameter 2436
Circumference 7652.9197041447
Area 4660628.0998241

Sphere

Radius = n
Volume 7568860034.1144
Surface area 18642512.399297
Circumference 7652.9197041447

Square

Length = n
Perimeter 4872
Area 1483524
Diagonal 1722.5121189704

Cube

Length = n
Surface area 8901144
Volume 1806932232
Space diagonal 2109.6378836189

Equilateral Triangle

Length = n
Perimeter 3654
Area 642384.73556195
Altitude 1054.8189418094

Triangular Pyramid

Length = n
Surface area 642384.73556195
Volume 212949005.73196
Height 574.17070632348