20121895 (number)

20121895 is an odd 8-digits composite number following 20121894 and preceding 20121896. In scientific notation, it is written as 2.0121895 × 10^7. The sum of its digits is 28. It has a total of 4 prime factors and 16 positive divisors. There are 14978304 positive integers (up to 20121895) that are relatively prime to 20121895.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0121895 × 10^7
Engineering notation 2.0121895 × 10^6

Prime Factorization of 20121895

Prime Factorization 5 × 23 × 37 × 4729

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20121895
Product of the distinct prime numbers

The prime factorization of 20121895 is 5 × 23 × 37 × 4729. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 20121895)

Multiplication

n×y
n×2 40243790
n×3 60365685
n×4 80487580
n×5 100609475

Division

n÷y
n÷2 10060947.5
n÷3 6707298.3333333
n÷3 5030473.75
n÷5 4024379

Exponentiation

ny
n2 404890658391025
n3 8.1471673146251E+21
n4 1.6393644525232E+29
n5 3.2987119380404E+36

Nth Root

y√n
2√n 4485.7435281121
3√n 271.99210166656
4√n 66.975693562009
5√n 28.889084266577

Divisors of 20121895

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 -20121894
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 20121895 can be divided by 16 positive divisors. The sum of these divisors (counting 20121895) is 1, the average is 0.0625.

Base conversion 20121895

Base System Value
2 Binary 1001100110000100100100111
3 Ternary 1101212022001101
4 Quaternary 1030300210213
5 Quinary 20122400040
6 Senary 1555140531
8 Octal 114604447
10 Decimal 20121895
12 Duodecimal 68a4747
16 Hexadecimal 1330927
20 Vigesimal 65f4ef
36 Base36 bza5j

Cryptographic Hash Functions

md5 b13ce50110a410fc3b113c9daae11418
sha1 398f17027fd9663c6200a9ab89141188c96b8437
sha256 e87fb2c9a0e234eca02ed0347539197c1c0a2046eb7a28390a2a0afab42f463a
sha512 20fb37277239ad98af9ebacb107f59956cd57c93e158dd7e62865a1319fbc2dc8d8cccd72a1830d1669537f6264b25a26622f5420d70e4b7b36410c684f27736
ripemd-160 d7e8c8ec80c90c6aec646fa87fddc68a3cc020f8

20121895 as geometric shapes

Circle

Radius = n
Diameter 40243790
Circumference 126429595.01661
Area 1.2720015179084E+15

Sphere

Radius = n
Volume 3.4126774644257E+22
Surface area 5.0880060716335E+15
Circumference 126429595.01661

Square

Length = n
Perimeter 80487580
Area 404890658391025
Diagonal 28456656.809647

Cube

Length = n
Surface area 2429343950346150
Volume 8.1471673146251E+21
Space diagonal 34852144.484566

Equilateral Triangle

Length = n
Perimeter 60365685
Area 1.7532279796082E+14
Altitude 17426072.242283

Triangular Pyramid

Length = n
Surface area 1.7532279796082E+14
Volume 9.601528759388E+20
Height 9485552.2698825