20121808 (number)

20121808 is an even 8-digits composite number following 20121807 and preceding 20121809. In scientific notation, it is written as 2.0121808 × 10^7. The sum of its digits is 22. It has a total of 6 prime factors and 20 positive divisors. There are 8623584 positive integers (up to 20121808) that are relatively prime to 20121808.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0121808 × 10^7
Engineering notation 2.0121808 × 10^6

Prime Factorization of 20121808

Prime Factorization 2 × 2 × 2 × 2 × 7 × 179659

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2515226
Product of the distinct prime numbers

The prime factorization of 20121808 is 2 × 2 × 2 × 2 × 7 × 179659. Since it has a total of 6 prime factors.

Most popular turbo-numbers

7, 3, 73, 95, 23, 881, 379, 7284, 96500, 20399, 342351, 136088, 517439, 3601544, 22390641, 9185570, 664901259, 152783638, 8291068152, 5234396703

Basic calculations (n = 20121808)

Multiplication

n×y
n×2 40243616
n×3 60365424
n×4 80487232
n×5 100609040

Division

n÷y
n÷2 10060904
n÷3 6707269.3333333
n÷3 5030452
n÷5 4024361.6

Exponentiation

ny
n2 404887157188864
n3 8.1470616386201E+21
n4 1.6393361005648E+29
n5 3.2986406263034E+36

Nth Root

y√n
2√n 4485.7338307127
3√n 271.99170966658
4√n 66.975621167053
5√n 28.889059285285

Divisors of 20121808

1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 179659, 359318, 718636, 1257613, 1437272, 2515226, 2874544, 5030452, 10060904, 20121808

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20121807
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20121808 can be divided by 20 positive divisors. The sum of these divisors (counting 20121808) is 1, the average is 0.05.

Base conversion 20121808

Base System Value
2 Binary 1001100110000100011010000
3 Ternary 1101212021221011
4 Quaternary 1030300203100
5 Quinary 20122344213
6 Senary 1555140304
8 Octal 114604320
10 Decimal 20121808
12 Duodecimal 68a4694
16 Hexadecimal 13308d0
20 Vigesimal 65f4a8
36 Base36 bza34

Cryptographic Hash Functions

md5 cb7a08c77d4c2c3e0b18a96c6d83c64d
sha1 badad0ab7fd0c500f19f91e0a4a3a77d8344977c
sha256 8e939218b81c8c40e5c486f41d07724d0682c3c6a650627527b9797df8ac53e5
sha512 769907b0c702d21ed10299902f62256725757a3b3788117fe7ccbaabbe281fb3bf4270d72e9030811e5d516dc3f7a0946eece6d5f53743f5a0ea2dc2764c7250
ripemd-160 0fa1efc066bfabf8d1b5cf0b1635acce585b1ffb

20121808 as geometric shapes

Circle

Radius = n
Diameter 40243616
Circumference 126429048.37949
Area 1.2719905185574E+15

Sphere

Radius = n
Volume 3.4126331989643E+22
Surface area 5.0879620742296E+15
Circumference 126429048.37949

Square

Length = n
Perimeter 80487232
Area 404887157188864
Diagonal 28456533.773067

Cube

Length = n
Surface area 2429322943133184
Volume 8.1470616386201E+21
Space diagonal 34851993.796146

Equilateral Triangle

Length = n
Perimeter 60365424
Area 1.7532128189581E+14
Altitude 17425996.898073

Triangular Pyramid

Length = n
Surface area 1.7532128189581E+14
Volume 9.6014042190218E+20
Height 9485511.2576891