20121915 (number)

20121915 is an odd 8-digits composite number following 20121914 and preceding 20121916. In scientific notation, it is written as 2.0121915 × 10^7. The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors. There are 9756000 positive integers (up to 20121915) that are relatively prime to 20121915.

Interesting facts

Basic properties

Name

Name twenty million one hundred twenty-one thousand nine hundred fifteen

Notation

Scientific notation 2.0121915 × 10^7
Engineering notation 2.0121915 × 10^6

Prime Factorization of 20121915

Prime Factorization 3 × 11 × 5 × 121951

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20121915
Product of the distinct prime numbers

The prime factorization of 20121915 is 3 × 11 × 5 × 121951. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 7, 25, 52, 863, 786, 9350, 4527, 12589, 381, 520201, 269665, 1206211, 3201109, 28543255, 29472179, 559364339, 455719301, 376970374, 2931095955

Basic calculations (n = 20121915)

Multiplication

n×y
n×2 40243830
n×3 60365745
n×4 80487660
n×5 100609575

Division

n÷y
n÷2 10060957.5
n÷3 6707305
n÷3 5030478.75
n÷5 4024383

Exponentiation

ny
n2 404891463267225
n3 8.1471916080887E+21
n4 1.6393709702667E+29
n5 3.2987283317175E+36

Nth Root

y√n
2√n 4485.7457573964
3√n 271.99219178133
4√n 66.975710204494
5√n 28.889090009391

Divisors of 20121915

1, 3, 5, 11, 15, 33, 55, 165, 121951, 365853, 609755, 1341461, 1829265, 4024383, 6707305, 20121915

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20121914
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20121915 can be divided by 16 positive divisors. The sum of these divisors (counting 20121915) is 1, the average is 0.0625.

Base conversion 20121915

Base System Value
2 Binary 1001100110000100100111011
3 Ternary 1101212022002010
4 Quaternary 1030300210323
5 Quinary 20122400130
6 Senary 1555141003
8 Octal 114604473
10 Decimal 20121915
12 Duodecimal 68a4763
16 Hexadecimal 133093b
20 Vigesimal 65f4ff
36 Base36 bza63

Cryptographic Hash Functions

md5 80e2d498db50f265c75882b80d94bbea
sha1 a2ce37bb2905530299690d18ee371204115f24b4
sha256 573acbf796238a12224be03995bf8b72ceb55d0b2184d7791f4316ebce9c04b1
sha512 e116fb94c74ec25f155fb85a3fa51966210c8232de00bfdf731d2cf7b68cdfde3923faad8782bf07ad8c3c187a8aea25fe2d86c3d737ce04937309dae3760294
ripemd-160 0e2f7071ac508b3eb3fd182dfd0b5798ae5182c5

20121915 as geometric shapes

Circle

Radius = n
Diameter 40243830
Circumference 126429720.68032
Area 1.2720040465015E+15

Sphere

Radius = n
Volume 3.412687640448E+22
Surface area 5.0880161860061E+15
Circumference 126429720.68032

Square

Length = n
Perimeter 80487660
Area 404891463267225
Diagonal 28456685.093919

Cube

Length = n
Surface area 2429348779603350
Volume 8.1471916080887E+21
Space diagonal 34852179.125582

Equilateral Triangle

Length = n
Perimeter 60365745
Area 1.7532314648244E+14
Altitude 17426089.562791

Triangular Pyramid

Length = n
Surface area 1.7532314648244E+14
Volume 9.6015573895094E+20
Height 9485561.6979729