Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

18121421 (number)

18121421 is an odd 8-digits composite number following 18121420 and preceding 18121422. In scientific notation, it is written as 1.8121421 × 10^7. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 17121888 positive integers (up to 18121421) that are relatively prime to 18121421.

Interesting facts

18121421 has 8 divisors, whose sum is 19126080
The reverse of 18121421 is 12412181
Previous prime number is 457

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2

Name

Name	eighteen million one hundred twenty-one thousand four hundred twenty-one

Notation

Scientific notation	1.8121421 × 10^7
Engineering notation	1.8121421 × 10^6

Prime Factorization of 18121421

Prime Factorization 19 × 457 × 2087

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	18121421	Product of the distinct prime numbers

The prime factorization of 18121421 is 19 × 457 × 2087. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 4, 79, 10, 727, 648, 2427, 6037, 23735, 68999, 416603, 747819, 8894118, 6304782, 44380074, 35383373, 66606428, 693829000, 1261385587, 2059369417

Basic calculations (n = 18121421)

Multiplication

n×y

n×2	36242842
n×3	54364263
n×4	72485684
n×5	90607105

Division

n÷y

n÷2	9060710.5
n÷3	6040473.6666667
n÷3	4530355.25
n÷5	3624284.2

Exponentiation

n^y

n²	328385899059241
n³	5.950819127316E+21
n⁴	1.0783729870095E+29
n⁵	1.9541650892626E+36

Nth Root

^y√n

²√n	4256.9262384965
³√n	262.66210274765
⁴√n	65.245124250755
⁵√n	28.290358439798

Divisors of 18121421

1, 19, 457, 2087, 8683, 39653, 953759, 18121421

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	-18121420	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 18121421 can be divided by 8 positive divisors. The sum of these divisors (counting 18121421) is 1, the average is 0.125.

Base conversion 18121421

Base	System	Value
2	Binary	1000101001000001011001101
3	Ternary	1021002122220202
4	Quaternary	1011020023031
5	Quinary	14114341141
6	Senary	1444223245
8	Octal	105101315
10	Decimal	18121421
12	Duodecimal	609ab25
16	Hexadecimal	11482cd
20	Vigesimal	5d53b1
36	Base36	asekt

Cryptographic Hash Functions

md5	0d61c3fdf3158ce72f367c9174b12484
sha1	7beaa0f367ba927b3dc6617ab615649c0d8b6d25
sha256	bc9e19da755ab3ad552277fdebd7036b3f96e681710909d7f91ef526f1ab2ef1
sha512	10af8420176f32e262e3b163f93db244fd5b07f267afa49f495ccb9e3b678db52e03c801db6592ff4f4d00e4674f7a9c595e361902cab1b05bfeaf5cd2f6c8cd
ripemd-160	e81d85ab9b72bef680d82f034d3225e8cd8cad0a

18121421 as geometric shapes

Circle

Radius = n

Diameter	36242842
Circumference	113860246.17242
Area	1.031654728027E+15

Sphere

Radius = n

Volume	2.4926732870957E+22
Surface area	4.126618912108E+15
Circumference	113860246.17242

Square

Length = n

Perimeter	72485684
Area	328385899059241
Diagonal	25627559.347673

Cube

Length = n

Surface area	1970315394355446
Volume	5.950819127316E+21
Space diagonal	31387221.877346

Equilateral Triangle

Length = n

Perimeter	54364263
Area	1.4219526541495E+14
Altitude	15693610.938673

Triangular Pyramid

Length = n

Surface area	1.4219526541495E+14
Volume	7.0131075975663E+20
Height	8542519.7825575