21031815 (number)

21031815 is an odd 8-digits composite number following 21031814 and preceding 21031816. In scientific notation, it is written as 2.1031815 × 10^7. The sum of its digits is 21. It has a total of 5 prime factors and 32 positive divisors. There are 9281664 positive integers (up to 21031815) that are relatively prime to 21031815.

Interesting facts

Basic properties

Name

Name twenty-one million thirty-one thousand eight hundred fifteen

Notation

Scientific notation 2.1031815 × 10^7
Engineering notation 2.1031815 × 10^6

Prime Factorization of 21031815

Prime Factorization 29 × 3 × 5 × 7 × 6907

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 21031815
Product of the distinct prime numbers

The prime factorization of 21031815 is 29 × 3 × 5 × 7 × 6907. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 3, 44, 48, 305, 196, 4362, 2216, 52907, 30362, 400107, 936889, 1483400, 9212196, 79637349, 16868738, 436629146, 321917262, 2640137551, 3189551831

Basic calculations (n = 21031815)

Multiplication

n×y
n×2 42063630
n×3 63095445
n×4 84127260
n×5 105159075

Division

n÷y
n÷2 10515907.5
n÷3 7010605
n÷3 5257953.75
n÷5 4206363

Exponentiation

ny
n2 442337242194225
n3 9.3031550454391E+21
n4 1.9566223583199E+29
n5 4.1151319465048E+36

Nth Root

y√n
2√n 4586.0456822845
3√n 276.03167300871
4√n 67.720349100433
5√n 29.145757731734

Divisors of 21031815

1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 145, 203, 435, 609, 1015, 3045, 6907, 20721, 34535, 48349, 103605, 145047, 200303, 241745, 600909, 725235, 1001515, 1402121, 3004545, 4206363, 7010605, 21031815

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21031814
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21031815 can be divided by 32 positive divisors. The sum of these divisors (counting 21031815) is 1, the average is 0.03125.

Base conversion 21031815

Base System Value
2 Binary 1010000001110101110000111
3 Ternary 1110120112020010
4 Quaternary 1100032232013
5 Quinary 20341004230
6 Senary 2030441303
8 Octal 120165607
10 Decimal 21031815
12 Duodecimal 7063233
16 Hexadecimal 140eb87
20 Vigesimal 6b8jaf
36 Base36 cis93

Cryptographic Hash Functions

md5 882dfa2937e88bf9f1b1c40d5d1e438b
sha1 3d1c82aaa823367366d5ac71ea7564c644124049
sha256 e12bb93ba329d8df11d158f4c5b5a5676cccd5b55f39d06169f2c2c2b37fd01f
sha512 3e9f080e962aeae88230504a13818c75def7d28959acadcfa2f7929c67f8d29c92a6e006dca4c051b9e024c920fc7190dfe403240eda7b219b60976add3ee50a
ripemd-160 c1cd631d37819bd471d57516b56b25cc80b0f98a

21031815 as geometric shapes

Circle

Radius = n
Diameter 42063630
Circumference 132146790.99132
Area 1.3896434304865E+15

Sphere

Radius = n
Volume 3.8968964727945E+22
Surface area 5.5585737219462E+15
Circumference 132146790.99132

Square

Length = n
Perimeter 84127260
Area 442337242194225
Diagonal 29743478.014322

Cube

Length = n
Surface area 2654023453165350
Volume 9.3031550454391E+21
Space diagonal 36428172.155389

Equilateral Triangle

Length = n
Perimeter 63095445
Area 1.9153764439007E+14
Altitude 18214086.077695

Triangular Pyramid

Length = n
Surface area 1.9153764439007E+14
Volume 1.09638733651E+21
Height 9914492.6714406