20131281 (number)

20131281 is an odd 8-digits composite number following 20131280 and preceding 20131282. In scientific notation, it is written as 2.0131281 × 10^7. The sum of its digits is 18. It has a total of 5 prime factors and 32 positive divisors. There are 12407040 positive integers (up to 20131281) that are relatively prime to 20131281.

Interesting facts

Basic properties

Name

Name twenty million one hundred thirty-one thousand two hundred eighty-one

Notation

Scientific notation 2.0131281 × 10^7
Engineering notation 2.0131281 × 10^6

Prime Factorization of 20131281

Prime Factorization 3 × 9 × 17 × 61 × 719

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20131281
Product of the distinct prime numbers

The prime factorization of 20131281 is 3 × 9 × 17 × 61 × 719. Since it has a total of 5 prime factors.

Most popular turbo-numbers

8, 10, 2, 24, 430, 30, 2476, 6881, 6703, 57320, 215794, 916058, 5083418, 728501, 41146082, 7015392, 780697732, 811282001, 4970754129, 1532970512

Basic calculations (n = 20131281)

Multiplication

n×y
n×2 40262562
n×3 60393843
n×4 80525124
n×5 100656405

Division

n÷y
n÷2 10065640.5
n÷3 6710427
n÷3 5032820.25
n÷5 4026256.2

Exponentiation

ny
n2 405268474700961
n3 8.1585735446464E+21
n4 1.6424253658644E+29
n5 3.3064126561745E+36

Nth Root

y√n
2√n 4486.7896095092
3√n 272.0343859714
4√n 66.98350251748
5√n 28.891778867325

Divisors of 20131281

1, 3, 9, 17, 27, 51, 61, 153, 183, 459, 549, 719, 1037, 1647, 2157, 3111, 6471, 9333, 12223, 19413, 27999, 36669, 43859, 110007, 131577, 330021, 394731, 745603, 1184193, 2236809, 6710427, 20131281

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 -20131280
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 20131281 can be divided by 32 positive divisors. The sum of these divisors (counting 20131281) is 1, the average is 0.03125.

Base conversion 20131281

Base System Value
2 Binary 1001100110010110111010001
3 Ternary 1101212202221000
4 Quaternary 1030302313101
5 Quinary 20123200111
6 Senary 1555252213
8 Octal 114626721
10 Decimal 20131281
12 Duodecimal 68aa069
16 Hexadecimal 1332dd1
20 Vigesimal 65g841
36 Base36 bzhe9

Cryptographic Hash Functions

md5 454b7dbb5497324fa7e966318a1a3a6f
sha1 d4545e7ca6505d4075d8d5764da71826340225ab
sha256 b52e442a5b461604393aac8ac29657e21357fff0eb90ac3b206f1fdfa6de2dee
sha512 822d73b29b2a0652303e23ca63780fde3dd2a2f4bbb525eadc43e2cf00407621944d4eee286288c4e708f58f1ad2fa3020ea501d54223869349e05e45643cb83
ripemd-160 ef527ad6e0969d67a98d8aa66fa978ff9dd6d4a8

20131281 as geometric shapes

Circle

Radius = n
Diameter 40262562
Circumference 126488568.9939
Area 1.2731884628521E+15

Sphere

Radius = n
Volume 3.4174552948844E+22
Surface area 5.0927538514083E+15
Circumference 126488568.9939

Square

Length = n
Perimeter 80525124
Area 405268474700961
Diagonal 28469930.618144

Cube

Length = n
Surface area 2431610848205766
Volume 8.1585735446464E+21
Space diagonal 34868401.513446

Equilateral Triangle

Length = n
Perimeter 60393843
Area 1.75486397222E+14
Altitude 17434200.756723

Triangular Pyramid

Length = n
Surface area 1.75486397222E+14
Volume 9.6149711303811E+20
Height 9489976.8727146